Privilege Escalation in Channelmgnt plug-in for Sopel

Exploitation

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

CVSS 4.0

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

EPSS

• CVE-2020-15251: 1.45% estimated exploitation activity in the next 30 days; percentile 73.49 (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.

Impact Malicious users are able to op/voice and take over a channel

Patches On version 1.0.3

Workarounds Disable channelmgnt

References https://phab.bots.miraheze.wiki/T117

For more information If you have any questions or comments about this advisory: * Email us at staff(at)mirahezebots(dot)org

Published by the source

13 Oct 2020, 17:30 UTC

Last modified by the source

4 May 2026, 08:45 UTC

Source last checked

25 Oct 2026, 02:14 UTC

1. Revision 2 · amended · 25 Oct 2026

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

2. Revision 1 · created · 24 Oct 2026

   Published from osv record GHSA-j257-jfvv-h3x5

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# Patch Next advisory brief: CVE-2020-15251

Advisory: Privilege Escalation in Channelmgnt plug-in for Sopel
IDs: CVE-2020-15251, GHSA-j257-jfvv-h3x5
Record: https://patchnext.com/advisories/cve-2020-15251 (revision 2, source checked 25 Oct 2026, 02:14 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Medium (CVSS 6.3)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: sopel-plugins-channelmgnt 1.0.3. A vendor fix does not mean a deployment is fixed.

## Affected components
- PyPI sopel-plugins-channelmgnt: affected < 1.0.3; fixed in 1.0.3

## Suggested inspection (read-only)
- `python -m pip show sopel-plugins-channelmgnt`: 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 sopel-plugins-channelmgnt.
- 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-j257-jfvv-h3x5 (OSV record GHSA-j257-jfvv-h3x5 lists affected ranges: PyPI sopel-plugins-channelmgnt >=0 <1.0.3 (fixed))

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