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Advisory record · GHSA-x288-3778-4hhx

Angular SSR is vulnerable to SSRF and Header Injection via request handling pipeline

CVSS 9.2 CriticalCriticalEPSS 0.0055 · 46th percentile

Critical, because:

  • CVSS score 9.2: 9.0 or more.

How we decide what’s critical

Published by the GitHub Advisory Database at 25 Feb 2026, 22:42 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
@angular/ssrnpm>=21.2.0-next.0, <21.2.0-rc.1 || >=21.0.0-next.0, <21.1.5 || >=20.0.0-next.0, <20.3.17 || <19.2.2121.2.0-rc.1, 21.1.5, 20.3.17, 19.2.21
@nguniversal/commonnpm<=16.2.0No fixed version yet
@nguniversal/express-enginenpm<=16.2.0No fixed version yet
Identifiers
GHSA-x288-3778-4hhx · CVE-2026-27739
Weakness (CWE)
CWE-918
Tags
Published
25 Feb 2026
Updated
25 Feb 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
9.2 Critical 4.0 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:H/SI:L/SA:N CNA (GitHub_M)
  • CISA KEV Not listed.
  • EPSS 0.0055, the 46th percentile, on 15 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

This record came from the full history of the GitHub Advisory Database, published 25 Feb 2026. New records show when each source confirmed them.

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.