CVE-2026-64677

Anki's local HTTP server is vulnerable to directory traversal attacks

5.9 Medium

Anki is a program for creating and reviewing flashcards. Prior to 25.09.3, endpoints in Anki's local HTTP server do not adequately constrain requested media and built-in data paths, allowing scripts served from shared decks, or malicious websites combined with an origin-check bypass, to read local files through directory traversal. This issue is fixed in version 25.09.3.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: Active

What an attacker can affect

Confidentiality: High
Integrity: None
Availability: None

Exploit likelihood

1.02%Up 0.3 points since Aug 7, 2026

What each source reports

CVE List Score used 5.9

Anki's local HTTP server is vulnerable to directory traversal attacks

Record: CVE-2026-64677
CVSS 4.0: 5.9 MediumCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Weakness: CWE-22
Updated: 2026-11-02

EUVDEUVD-2026-54206 5.9

Record: EUVD-2026-54206
CVSS 4.0: 5.9 MediumCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Updated: 2026-11-02

NVD 5.9

Record: CVE-2026-64677
CVSS 4.0: 5.9 MediumCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:N/VA:N/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
Weakness: CWE-22
Updated: 2026-11-02

OSV 5.9

Anki's local HTTP server is vulnerable to directory traversal attacks

Record: CVE-2026-64677
CVSS 4.0: 5.9 MediumCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Weakness: CWE-22
Updated: 2026-11-02

OSVDEBIAN-CVE-2026-64677 5.9

Record: DEBIAN-CVE-2026-64677
CVSS 4.0: 5.9 MediumCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:N/VA:N/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
Updated: 2026-11-02

OSVUBUNTU-CVE-2026-64677 5.9

Record: UBUNTU-CVE-2026-64677
CVSS 4.0: 5.9 MediumCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Updated: 2026-11-02

Affected products

ankitects anki

Affected packages

Affected packages
Package	Affected	Fixed
`anki` Ubuntu:16.04:LTS	All versions, plus listed versions 2.0.32+dfsg-1	None known
`anki` Ubuntu:18.04:LTS	All versions, plus listed versions 2.1.0+dfsg~a12-0.12.1.0+dfsg~b24-12.1.0+dfsg~b25-12.1.0+dfsg~b26-12.1.0+dfsg~b27-1 Show 6 moreShow less 2.1.0+dfsg~b29-12.1.0+dfsg~b31-12.1.0+dfsg~b33-12.1.0+dfsg~b34-12.1.0+dfsg~b35-12.1.0+dfsg~b36-1	None known
`anki` Ubuntu:20.04:LTS	All versions, plus listed versions 2.1.8+dfsg-1ubuntu12.1.15+dfsg-1	None known
`anki` Ubuntu:22.04:LTS	All versions, plus listed versions 2.1.15+dfsg-32.1.15+dfsg-3ubuntu0.1	None known
`anki` Ubuntu:24.04:LTS	All versions, plus listed versions 2.1.15+dfsg-3ubuntu12.1.15+dfsg-3ubuntu22.1.15+dfsg-3ubuntu32.1.15+dfsg-3ubuntu42.1.15+dfsg-3ubuntu4.1	None known

History

History
Recorded	Changed	Sources
Nov 3, 2026	affected
Nov 2, 2026	first indexed	CVE List, EUVD, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-64677 is a medium vulnerability (CVSS 5.9) in Ankitects Anki, published August 6, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.02%, the 63rd percentile. No source names a fixed version.