Apprise forwards configured auth headers across cross-origin HTTP redirects

Exploitation

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

CVSS

3.1 · CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N

EPSS

• CVE-2026-59180: 0.30% estimated exploitation activity in the next 30 days; percentile 22.68 (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.

Summary Apprise's HTTP-based notification plugins and its HTTP attachment / config loaders (apprise/attachment/http.py, apprise/config/http.py) follow HTTP 3xx redirects by default and re-send the user-configured auth headers and query parameters on the redirected request. If an operator-configured destination is later compromised (service takeover, malicious update), or an attacker holds a MITM position on an unprotected network path, that destination can return a 302 Location: to an arbitrary host and Apprise forwards the user's secret (X-Gotify-Key, Authorization, bearer tokens in query, custom +Header= values) to that cross-origin host. The attacker does not need to control the original Apprise URL — only the response from a destination the operator already trusts. This is the application-layer analogue of urllib3 GHSA-34jh-p97f-mpxf / CVE-2026-44431 ("Proxy-Authorization forwarded across cross-origin redirect"). Affected versions All releases up to and including v1.10.0 (latest…

Published by the source

14 Oct 2026, 18:38 UTC

Last modified by the source

15 Oct 2026, 14:56 UTC

Source last checked

26 Oct 2026, 13:55 UTC

1. Revision 3 · amended · 26 Oct 2026

   Amended from ghsa record GHSA-856c-92hv-3vxx

2. Revision 2 · amended · 24 Oct 2026

   Amended from osv record GHSA-856c-92hv-3vxx

3. Revision 1 · created · 23 Oct 2026

   Published from ghsa record GHSA-856c-92hv-3vxx

Preview the exact text before you copy it. Commands are read-only suggestions; review them before running anything.

# Patch Next advisory brief: CVE-2026-59180

Advisory: Apprise forwards configured auth headers across cross-origin HTTP redirects
IDs: CVE-2026-59180, GHSA-856c-92hv-3vxx
Record: https://patchnext.com/advisories/cve-2026-59180 (revision 3, source checked 26 Oct 2026, 13:55 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Low (CVSS 3.1)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: apprise 1.11.0. A vendor fix does not mean a deployment is fixed.

## Affected components
- PyPI apprise: affected <= 1.10.0; fixed in 1.11.0

## Suggested inspection (read-only)
- `python -m pip show apprise`: 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 apprise.
- 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://github.com/advisories/GHSA-856c-92hv-3vxx (GitHub-reviewed advisory GHSA-856c-92hv-3vxx lists affected ranges: PyPI apprise >=0 <=1.10.0)
- Verified: https://osv.dev/vulnerability/GHSA-856c-92hv-3vxx (OSV record GHSA-856c-92hv-3vxx lists affected ranges: PyPI apprise >=0 <1.11.0 (fixed))

Commands are suggestions: review each one before running it.