CVE-2026-59153 json
Anki's local HTTP server does not sufficiently validate requests
published 4mo ago modified 17d ago also EUVD-2026-42112 , GHSA-869j-r97x-hx2g , PYSEC-2026-3459
- cvss
- 2.1
- version 4.0, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 18%
- public exploits
- 0
- none known
Summary
Anki is a program for creating and reviewing flashcards. Prior to 25.09.3, Anki launches a local HTTP server to serve media files and web pages for parts of its interface, but requests from other origins were not sufficiently blocked. A malicious website could potentially trigger side-effecting requests to the local server, with severity varying by browser depending on Private Network Access protections. This issue is fixed in version 25.09.3.
Patch / fix
- pypi aqt 25.9.3
- ankitects anki 25.09.3
Is CVE-2026-59153 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 4mo ago
Exploit prediction
0.26% chance of exploitation in the next 30 days, higher than 18% of all scored CVEs (FIRST EPSS, 2026-11-11).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 2.1 | CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N |
| CNA | 4.0 | 2.1 | CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| pypi | aqt | <25.9.3 |
25.9.3 |
Affected products
- ankitects anki
Classification
References
-
github.com
/ankitects/anki/commit/858e5689d0e4fd24f74856c7e8f245412694a219
web
-
github.com
/ankitects/anki/security/advisories/GHSA-869j-r97x-hx2g
web
-
github.com
/ankitects/anki/releases/tag/25.09.3
web
-
x.com
/taviso/status/2051310678800253318
web
-
nvd.nist.gov
/vuln/detail/CVE-2026-59153
advisory
-
github.com
/ankitects/anki
package
-
pypi.org
/project/aqt
package
-
github.com
/advisories/GHSA-869j-r97x-hx2g
advisory
Sources
- CVE List CVE-2026-59153
- GitHub Advisory GHSA-869j-r97x-hx2g
- NVD CVE-2026-59153
- OSV PYSEC-2026-3459
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.