Is CVE-2026-59153 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-59153 being exploited in the wild.

How severe is CVE-2026-59153?

Medium severity, with a CVSS score of 4, published 7 July 2026.

Which products and versions are affected?

Ankitects Anki < 25.09.3; aqt (PyPI) ECOSYSTEM:introduced=0,fixed=25.9.3.

Is there a fix for CVE-2026-59153?

Yes. aqt (PyPI): upgrade to 25.9.3 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-59153 attacked?

It is attacked over the network, in a network appliance.

Am I affected by CVE-2026-59153?

Check whether you run Ankitects Anki or aqt (PyPI) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-59153: Ankitects Anki origin validation error in local HTTP server

Q: Which products and versions are affected?

Ankitects Anki < 25.09.3; aqt (PyPI) ECOSYSTEM:introduced=0,fixed=25.9.3.

Q: Is there a fix for CVE-2026-59153?

Yes. aqt (PyPI): upgrade to 25.9.3 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

Q: How is CVE-2026-59153 attacked?

It is attacked over the network, in a network appliance.

Q: Am I affected by CVE-2026-59153?

Check whether you run Ankitects Anki or aqt (PyPI) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-59153 · Severity: medium · CVSS 4 · Published 2026-07-07

Anki, a popular flashcard and language learning application, contains a vulnerability in its internal media server. A malicious website visited by a user could send unauthorized commands to the Anki application running on the same computer. This could allow an attacker to read local files or trigger unintended actions within the software, potentially compromising user data or privacy.

Technologies: Ankitects Anki. Vendors: Ankitects, PyPI.

Quick answers

Is CVE-2026-59153 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-59153 being exploited in the wild.
How severe is CVE-2026-59153?: Medium severity, with a CVSS score of 4, published 7 July 2026.
Which products and versions are affected?: Ankitects Anki < 25.09.3; aqt (PyPI) ECOSYSTEM:introduced=0,fixed=25.9.3.
Is there a fix for CVE-2026-59153?: Yes. aqt (PyPI): upgrade to 25.9.3 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-59153 attacked?: It is attacked over the network, in a network appliance.
Am I affected by CVE-2026-59153?: Check whether you run Ankitects Anki or aqt (PyPI) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

aqt (PyPI): upgrade to 25.9.3 or later
```
pip install "aqt>=25.9.3"
```

Technical details

Anki versions prior to 25.09.3 launch a local HTTP server to serve media and interface components. The server fails to properly validate the 'Origin' and 'Host' headers, leading to an origin validation error (CWE-346). An attacker can exploit this by enticing a user to visit a malicious website, which then makes cross-origin requests to the local Anki server. The impact is highest on browsers like Firefox and Safari that lack robust Private Network Access (PNA) protections, potentially allowing the attacker to read local files or execute state-changing actions. The issue was addressed in version 25.09.3 by fixing a variable shadowing bug that interfered with host validation logic.

Affected products

Ankitects Anki < 25.09.3

Identifiers

CVE-2026-59153
GHSA-869j-r97x-hx2g
PYSEC-2026-3459

Timeline

2026-05-04: disclosed: Initial discovery/report by Tavis Ormandy
2026-05-07: patched: Version 25.09.3 released
2026-06-19: advisory: GitHub Security Advisory published
2026-07-07: advisory: CVE published to NVD

References

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