---
id: "CVE-2026-84155"
page: "https://infrastack.ai/live/CVE-2026-84155"
kind: "vulnerability"
aliases: ["CVE-2026-84155"]
title: "CodeChecker: logged-out session tokens stay valid on other server workers"
severity: "medium"
cvss: 5.3
epss: null
exploited: false
status: "open"
category: "other"
products: []
ecosystems: []
tags: ["codechecker", "other", "python", "self-hosted"]
not_affected_if: ["no-user-sessions", "single-worker"]
published_at: "2026-11-06T11:17:17+00:00"
first_seen_at: "2026-11-06T11:41:29+00:00"
updated_at: "2026-11-06T11:42:34+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-84155", "first_seen_at": "2026-11-06T11:41:29+00:00"}]
exploit_sources: []
---

# CodeChecker: logged-out session tokens stay valid on other server workers

Link for people: https://infrastack.ai/live/CVE-2026-84155 (this .md is for agents)

CodeChecker's web server keeps honoring a session token after logout because only one worker process clears its in-memory cache. An attacker holding a captured token can keep acting as the user until the session expires.

_Summary, check and fix written by a model from the sources; labelled as such._

## Timeline

- 2026-11-06T11:41:29+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-84155

## Documents

- [advisory] Vendor advisory: github.com https://github.com/Ericsson/codechecker/security/advisories/GHSA-r42x-9wgw-cqc2

## From the sources

CodeChecker's web server fails to fully invalidate a session token on logout when the server runs with more than one API worker process (the default). Each worker process maintains its own
in-memory session cache; logout only clears the cache of the single worker that handles the request (plus the shared database record). Other workers continue to honor the destroyed token
from their stale in-memory copies until the session's lifetime expires. An attacker who has captured a valid token can therefore keep impersonating the user after the user has logged out.

---

_Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai_