Certifi removing TrustCor root certificate

Exploitation

No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.

CVSS 4.0

5.9 · CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N · score source

EPSS

• CVE-2022-23491: 0.53% estimated exploitation activity in the next 30 days; percentile 44.87 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.

As published by the source; long descriptions are shortened.

Certifi 2022.12.07 removes root certificates from "TrustCor" from the root store. These are in the process of being removed from Mozilla's trust store. TrustCor's root certificates are being removed pursuant to an investigation prompted by media reporting that TrustCor's ownership also operated a business that produced spyware. Conclusions of Mozilla's investigation can be found here.

Published by the source

7 Dec 2022, 23:05 UTC

Last modified by the source

12 Feb 2025, 18:53 UTC

Source last checked

26 Oct 2026, 13:30 UTC

1. Revision 3 · amended · 26 Oct 2026

   Amended from ghsa record GHSA-43fp-rhv2-5gv8

2. Revision 2 · amended · 25 Oct 2026

   Reviewed OSV alias/range/CVSS4 correction; package source scopes and original publication preserved. No customer finding resolved.

3. Revision 1 · created · 24 Oct 2026

   Published from osv record GHSA-43fp-rhv2-5gv8

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# Patch Next advisory brief: CVE-2022-23491

Advisory: Certifi removing TrustCor root certificate
IDs: CVE-2022-23491, GHSA-43fp-rhv2-5gv8
Record: https://patchnext.com/advisories/cve-2022-23491 (revision 3, source checked 26 Oct 2026, 13:30 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Medium (CVSS 5.9)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: certifi 2022.12.7. A vendor fix does not mean a deployment is fixed.

## Affected components
- PyPI certifi: affected >= 2017.11.5, < 2022.12.7; fixed in 2022.12.7

## Suggested inspection (read-only)
- `python -m pip show certifi`: prints the installed version. Run with the environment that serves production active.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on certifi.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://osv.dev/vulnerability/GHSA-43fp-rhv2-5gv8 (OSV record GHSA-43fp-rhv2-5gv8 lists affected ranges: PyPI certifi >=2017.11.05 <2022.12.07 (fixed))
- Verified: https://github.com/advisories/GHSA-43fp-rhv2-5gv8 (GitHub-reviewed advisory GHSA-43fp-rhv2-5gv8 lists affected ranges: PyPI certifi >=2017.11.5 <2022.12.7)

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