135 lines
6.0 KiB
JSON
135 lines
6.0 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-2026-27630",
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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": "2026-02-20T22:02:30.028Z",
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"datePublished": "2026-02-25T23:05:16.563Z",
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"dateUpdated": "2026-02-26T16:50:51.538Z"
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},
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"containers": {
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"cna": {
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"title": "TinyWeb vulnerable to Remote Denial of Service via Thread/Connection Exhaustion (Slowloris)",
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"problemTypes": [
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{
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"descriptions": [
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{
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"cweId": "CWE-400",
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"lang": "en",
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"description": "CWE-400: Uncontrolled Resource Consumption",
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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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"cvssV4_0": {
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"attackVector": "NETWORK",
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"attackComplexity": "LOW",
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"attackRequirements": "NONE",
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"privilegesRequired": "NONE",
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"userInteraction": "NONE",
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"vulnConfidentialityImpact": "NONE",
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"vulnIntegrityImpact": "NONE",
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"vulnAvailabilityImpact": "HIGH",
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"subConfidentialityImpact": "NONE",
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"subIntegrityImpact": "NONE",
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"subAvailabilityImpact": "NONE",
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"baseScore": 8.7,
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"baseSeverity": "HIGH",
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"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
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"version": "4.0"
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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/maximmasiutin/TinyWeb/security/advisories/GHSA-ccv5-8948-c99c",
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"tags": [
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"x_refsource_CONFIRM"
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],
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"url": "https://github.com/maximmasiutin/TinyWeb/security/advisories/GHSA-ccv5-8948-c99c"
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},
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{
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"name": "https://github.com/maximmasiutin/TinyWeb/commit/23268c8",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/maximmasiutin/TinyWeb/commit/23268c8"
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},
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{
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"name": "https://www.masiutin.net/tinyweb-cve-2026-27630.html",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://www.masiutin.net/tinyweb-cve-2026-27630.html"
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}
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],
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"affected": [
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{
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"vendor": "maximmasiutin",
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"product": "TinyWeb",
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"versions": [
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{
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"version": "< 2.02",
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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": "2026-02-25T23:07:56.613Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "TinyWeb is a web server (HTTP, HTTPS) written in Delphi for Win32. Versions prior to version 2.02 are vulnerable to a Denial of Service (DoS) attack known as Slowloris. The server spawns a new OS thread for every incoming connection without enforcing a maximum concurrency limit or an appropriate request timeout. An unauthenticated remote attacker can exhaust server concurrency limits and memory by opening numerous connections and sending data exceptionally slowly (e.g. 1 byte every few minutes). Anyone hosting services using TinyWeb is impacted. Version 2.02 fixes the issue. The patch introduces a `CMaxConnections` limit (set to 512) and a `CConnectionTimeoutSecs` idle timeout (set to 30 seconds). As a temporary workaround if upgrading is not immediately possible, consider placing the server behind a robust reverse proxy or Web Application Firewall (WAF) such as nginx, HAProxy, or Cloudflare, configured to buffer incomplete requests and aggressively enforce connection limits and timeouts."
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}
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],
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"source": {
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"advisory": "GHSA-ccv5-8948-c99c",
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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": "2026-02-26T16:47:44.721473Z",
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"id": "CVE-2026-27630",
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"options": [
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{
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"Exploitation": "none"
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},
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{
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"Automatable": "no"
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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": "2026-02-26T16:50:51.538Z"
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}
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}
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]
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}
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} |