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Advisory record · PKSA-k1xt-28gt-fw9y

CVE-2026-118513: X509Authenticator and X509AuthenticationListener Read Escaped RFC 2253 Commas and Bare Slashes Inside a DN Value as RDN Boundaries: Incomplete Fix for CVE-2026-45063

CVSS 7.7 HighEPSS 0.0027 · 19th percentile

Published by Packagist at 4 Nov 2026, 10:45 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
symfony/security-httpPackagist>=2.0.0, <3.0.0 || >=3.0.0, <4.0.0 || >=4.0.0, <5.0.0 || >=5.0.0, <5.1.0 || >=5.1.0, <5.2.0 || >=5.2.0, <5.3.0 || >=5.3.0, <5.4.0 || >=5.4.0, <5.4.56 || >=6.0.0, <6.1.0 || >=6.1.0, <6.2.0 || >=6.2.0, <6.3.0 || >=6.3.0, <6.4.0 || >=6.4.0, <6.4.50 || >=7.0.0, <7.1.0 || >=7.1.0, <7.2.0 || >=7.2.0, <7.3.0 || >=7.3.0, <7.4.0 || >=7.4.0, <7.4.23 || >=8.0.0, <8.1.0 || >=8.1.0, <8.1.113.0.0, 4.0.0, 5.0.0, 5.1.0, 5.2.0, 5.3.0, 5.4.0, 5.4.56, 6.1.0, 6.2.0, 6.3.0, 6.4.0, 6.4.50, 7.1.0, 7.2.0, 7.3.0, 7.4.0, 7.4.23, 8.1.0, 8.1.11
Identifiers
PKSA-k1xt-28gt-fw9y · CVE-2026-118513
Weakness (CWE)
CWE-290
Tags
Published
4 Nov 2026
Updated
4 Nov 2026

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
7.7 High 4.0 CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N CNA (Checkmarx)
  • CISA KEV Not listed.
  • EPSS 0.0027, the 19th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 4 Nov 2026, 10:45 UTC Confirmed by Packagist
  2. 4 Nov 2026, 12:19 UTC Confirmed by the CVE List
  3. 4 Nov 2026, 13:17 UTC Confirmed by NVD
  4. 4 Nov 2026, 19:23 UTC First seen by agentprime

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.