178 lines
7.8 KiB
JSON
178 lines
7.8 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2026-77463",
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"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
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"state": "PUBLISHED",
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"assignerShortName": "GitHub_M",
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"dateReserved": "2026-08-20T20:07:49.962Z",
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"datePublished": "2026-11-05T20:54:09.798Z",
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"dateUpdated": "2026-11-10T04:20:00.888Z"
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},
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"containers": {
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"cna": {
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"title": "Remark42: Rate limit bypass via unconditional trust of X-Forwarded-For/X-Real-IP headers in direct-internet deployment",
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"problemTypes": [
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{
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"descriptions": [
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{
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"cweId": "CWE-348",
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"lang": "en",
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"description": "CWE-348: Use of Less Trusted Source",
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"type": "CWE"
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}
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]
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},
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{
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"descriptions": [
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{
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"cweId": "CWE-807",
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"lang": "en",
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"description": "CWE-807: Reliance on Untrusted Inputs in a Security Decision",
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"type": "CWE"
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}
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]
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}
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],
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"metrics": [
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{
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"cvssV3_1": {
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"attackComplexity": "LOW",
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"attackVector": "NETWORK",
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"availabilityImpact": "LOW",
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"baseScore": 6.5,
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"baseSeverity": "MEDIUM",
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"confidentialityImpact": "NONE",
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"integrityImpact": "LOW",
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"privilegesRequired": "NONE",
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"scope": "UNCHANGED",
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"userInteraction": "NONE",
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"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L",
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"version": "3.1"
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}
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}
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],
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"references": [
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{
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"name": "https://github.com/umputun/remark42/security/advisories/GHSA-56x6-q882-mf27",
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"tags": [
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"x_refsource_CONFIRM"
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],
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"url": "https://github.com/umputun/remark42/security/advisories/GHSA-56x6-q882-mf27"
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},
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{
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"name": "https://github.com/umputun/remark42/pull/2116",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/umputun/remark42/pull/2116"
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},
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{
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"name": "https://github.com/umputun/remark42/pull/2118",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/umputun/remark42/pull/2118"
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},
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{
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"name": "https://github.com/umputun/remark42/commit/b1502801facd7782a1c70fd51f8ad5c2eb650d39",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/umputun/remark42/commit/b1502801facd7782a1c70fd51f8ad5c2eb650d39"
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},
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{
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"name": "https://github.com/umputun/remark42/commit/e62b3c830d81659cf5d2687b0c8261da7d42fdab",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/umputun/remark42/commit/e62b3c830d81659cf5d2687b0c8261da7d42fdab"
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},
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{
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"name": "https://github.com/umputun/remark42/releases/tag/backend/v1.16.2",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/umputun/remark42/releases/tag/backend/v1.16.2"
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},
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{
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"name": "https://remark42.com/docs/configuration/parameters/#trusted-proxies-and-client-ip",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://remark42.com/docs/configuration/parameters/#trusted-proxies-and-client-ip"
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}
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],
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"affected": [
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{
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"vendor": "umputun",
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"product": "remark42",
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"versions": [
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{
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"version": ">= 1.0.0, < 1.16.2",
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"status": "affected"
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}
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]
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}
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],
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"providerMetadata": {
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"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
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"shortName": "GitHub_M",
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"dateUpdated": "2026-11-05T20:54:09.798Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "Remark42 is a self-hosted comment engine for blogs, articles, or any other place where readers can add comments. From 1.0.0 until 1.16.2, Remark42 globally trusts True-Client-IP, X-Real-IP, and X-Forwarded-For without verifying that the direct peer is a trusted proxy, and middleware.RealIP overwrites r.RemoteAddr before per-IP controls run. In a directly reachable deployment, or a proxy that forwards attacker-controlled headers, a remote attacker can rotate spoofed forwarding headers to obtain fresh token buckets for rate-limited endpoints, bypass vote de-duplication when --votes-ip is enabled, mint anonymous identities, and poison stored comment IPs and request logs. The global concurrent-request throttle and per-request timeouts still limit availability impact. Mitigation support is available in version 1.16.2, but operators must configure --trusted-proxy for the deployment topology."
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}
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],
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"source": {
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"advisory": "GHSA-56x6-q882-mf27",
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"discovery": "UNKNOWN"
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}
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},
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"adp": [
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{
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"references": [
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{
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"url": "https://github.com/umputun/remark42/security/advisories/GHSA-56x6-q882-mf27",
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"tags": [
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"exploit"
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]
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}
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],
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"metrics": [
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{
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"other": {
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"type": "ssvc",
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"content": {
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"timestamp": "2026-11-10T04:19:02.667896Z",
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"id": "CVE-2026-77463",
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"options": [
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{
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"Exploitation": "poc"
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},
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{
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"Automatable": "yes"
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},
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{
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"Technical Impact": "partial"
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}
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],
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"role": "CISA Coordinator",
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"version": "2.0.3"
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}
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}
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}
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],
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"title": "CISA ADP Vulnrichment",
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"providerMetadata": {
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"shortName": "CISA-ADP",
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"dateUpdated": "2026-11-10T04:20:00.888Z"
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}
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}
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]
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}
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} |