125 lines
5.3 KiB
JSON
125 lines
5.3 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-2026-39971",
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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": "2026-04-08T00:01:47.627Z",
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"datePublished": "2026-04-14T23:35:49.305Z",
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"dateUpdated": "2026-04-15T16:22:04.004Z"
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},
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"containers": {
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"cna": {
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"title": "Serendipity: Host Header Injection leads to SMTP header injection via unvalidated HTTP_HOST",
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"problemTypes": [
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{
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"descriptions": [
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{
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"cweId": "CWE-113",
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"lang": "en",
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"description": "CWE-113: Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Request/Response Splitting')",
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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": "NONE",
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"baseScore": 7.2,
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"baseSeverity": "HIGH",
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"confidentialityImpact": "LOW",
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"integrityImpact": "LOW",
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"privilegesRequired": "NONE",
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"scope": "CHANGED",
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"userInteraction": "NONE",
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"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N",
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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/s9y/Serendipity/security/advisories/GHSA-458g-q4fh-mj6r",
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"tags": [
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"x_refsource_CONFIRM"
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],
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"url": "https://github.com/s9y/Serendipity/security/advisories/GHSA-458g-q4fh-mj6r"
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},
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{
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"name": "https://github.com/s9y/Serendipity/releases/tag/2.6.0",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/s9y/Serendipity/releases/tag/2.6.0"
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}
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],
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"affected": [
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{
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"vendor": "s9y",
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"product": "Serendipity",
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"versions": [
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{
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"version": "< 2.6.0",
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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": "2026-04-14T23:35:49.305Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "Serendipity is a PHP-powered weblog engine. In versions 2.6-beta2 and below, the email sending functionality in include/functions.inc.php inserts $_SERVER['HTTP_HOST'] directly into the Message-ID SMTP header without validation, and the existing sanitization function serendipity_isResponseClean() is not called on HTTP_HOST before embedding it. An attacker who can control the Host header during an email-triggering action such as comment notifications or subscription emails can inject arbitrary SMTP headers into outgoing emails. This enables identity spoofing, reply hijacking via manipulated Message-ID threading, and email reputation abuse through the attacker's domain being embedded in legitimate mail headers. This issue has been fixed in version 2.6.0."
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}
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],
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"source": {
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"advisory": "GHSA-458g-q4fh-mj6r",
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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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"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": "2026-04-15T16:20:55.327550Z",
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"id": "CVE-2026-39971",
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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": "2026-04-15T16:22:04.004Z"
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}
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}
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]
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}
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} |