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Advisory record · GHSA-4rhg-h8f2-v4jm

pgAdmin 4 has deserialization of untrusted data in its FileBackedSessionManager

CVSS 7.3 HighEPSS 0.0013 · 2nd percentile

Published by the GitHub Advisory Database at 11 May 2026, 18:31 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
pgadmin4PyPI<9.159.15
Identifiers
GHSA-4rhg-h8f2-v4jm · CVE-2026-7818 · PYSEC-2026-2865
Weakness (CWE)
CWE-502
Tags
Published
11 May 2026
Updated
10 Sept 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

Versions of pgadmin4 before 9.15 are affected. The session manager deserialized session files before checking their HMAC, so an authenticated user with write access to the sessions directory, whether through misconfiguration or another path-traversal flaw, could plant a crafted payload and execute code as the pgAdmin process user. Upgrade to pgadmin4 9.15 or later. The source does not list a workaround.

Written 5 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
7.3 High 4.0 CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N CNA (PostgreSQL)
  • CISA KEV Not listed.
  • EPSS 0.0013, the 2nd percentile, on 11 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:34 UTC First seen by agentprime
  2. 31 Oct 2026, 14:34 UTC Confirmed by OSV

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.