CVE-2026-58266

MEDIUMPre-NVD 6.56.5—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 6.5 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.2%, top 89% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
6.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 6.5Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

Anki is a program for creating and reviewing flashcards. Prior to 25.09.4, Anki's webview-based pages communicate with the Rust backend using an internal localhost API, and user scripts included via iframes in the editor can access this API despite protections intended to block reviewer and editor scripts. A malicious imported card package with an embedded iframe can use exposed API methods such as getImageForOcclusion to read arbitrary files accessible to the Anki process and exfiltrate them over the network. This issue is fixed in version 25.09.4.

CVSS v3
6.5
EG Score
6.5MEDIUMmedium confidence
EG Risk
29
EG Risk 29/100

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity65% × 45%
Exploitation0% × 40%
Automatability0% × 15%
EPSS PROB
0.2%
EPSS %ILE
11th
KEV
Not listed

Published

July 7, 2026

Last Modified

July 8, 2026

Advisory Details (3)

Auto-updated Jul 7, 2026
Patch available. Sources: github_release, github, github_commit.
githubMentions a patch (unverified)

User scripts in iframes have access to the internal Anki API · Advisory · ankitects/anki · GitHub

https://github.com/ankitects/anki/security/advisories/GHSA-cw6h-ffmh-x6vh
github_release Patch Available

25.09.4

Patch available: ankitects/anki 25.09.4

https://github.com/ankitects/anki/releases/tag/25.09.4
github_commit

commit b2b68d829e85 (ankitects/anki)

Fix landed in ankitects/anki commit b2b68d829e85 — awaiting tagged release

https://github.com/ankitects/anki/commit/b2b68d829e853da51b5de8aad6c13b53e90bc20d

Affected Packages

(1 across 1 ecosystem)
PyPI(1)
PackageVulnerable rangeFix by version rangeDependents
aqt2.1.24 ... 25.9rc1 (188 versions)
  • every version up to 25.9.4: fixed in 25.9.4
—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 6× in last 7d / 30× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 129 total refreshes for this CVE.

  1. 2026-10-09 20:07 UTCEPSS rescore
  2. 2026-10-08 17:13 UTCEPSS rescore
  3. 2026-10-07 23:48 UTCEPSS rescore
  4. 2026-10-06 15:18 UTCEPSS rescore
  5. 2026-10-05 17:43 UTCEPSS rescore
  6. 2026-10-04 23:22 UTCEPSS rescore
  7. 2026-10-03 14:26 UTCEPSS rescore
  8. 2026-10-02 17:56 UTCEPSS rescore
  9. 2026-10-01 19:50 UTCEPSS rescore
  10. 2026-09-30 15:03 UTCEPSS rescore
  11. 2026-09-29 15:22 UTCEPSS rescore
  12. 2026-09-28 13:51 UTCEPSS rescore
  13. 2026-09-28 13:35 UTCEG score recompute
  14. 2026-09-27 13:48 UTCEPSS rescore
  15. 2026-09-26 15:59 UTCEPSS rescore
  16. 2026-09-24 14:04 UTCEPSS rescore
  17. 2026-09-23 17:54 UTCEPSS rescore
  18. 2026-09-23 06:16 UTCEG score recompute
  19. 2026-09-20 20:16 UTCEPSS rescore
  20. 2026-09-18 19:28 UTCEPSS rescore
  21. 2026-09-18 05:48 UTCEG score recompute
  22. 2026-09-17 19:31 UTCEPSS rescore
  23. 2026-09-16 14:08 UTCEPSS rescore
  24. 2026-09-16 05:15 UTCEPSS rescore
  25. 2026-09-15 03:11 UTCEPSS rescore
Show 75 more
  1. 2026-09-14 06:38 UTCEG score recompute
  2. 2026-09-13 16:47 UTCEPSS rescore
  3. 2026-09-13 08:29 UTCEG score recompute
  4. 2026-09-12 03:41 UTCEG score recompute
  5. 2026-09-11 14:53 UTCEPSS rescore
  6. 2026-09-10 09:35 UTCEPSS rescore
  7. 2026-09-08 22:01 UTCEPSS rescore
  8. 2026-09-07 16:01 UTCEPSS rescore
  9. 2026-09-06 13:47 UTCEPSS rescore
  10. 2026-09-05 22:53 UTCEG score recompute
  11. 2026-09-04 05:07 UTCEPSS rescore
  12. 2026-09-02 14:12 UTCEPSS rescore
  13. 2026-09-01 13:54 UTCEPSS rescore
  14. 2026-09-01 04:40 UTCEPSS rescore
  15. 2026-08-30 19:17 UTCEPSS rescore
  16. 2026-08-30 07:41 UTCEG score recompute
  17. 2026-08-30 01:22 UTCEPSS rescore
  18. 2026-08-28 21:42 UTCEPSS rescore
  19. 2026-08-27 21:54 UTCEG score recompute
  20. 2026-08-27 14:25 UTCEPSS rescore
  21. 2026-08-26 14:46 UTCEPSS rescore
  22. 2026-08-26 12:57 UTCEG score recompute
  23. 2026-08-25 13:49 UTCEPSS rescore
  24. 2026-08-24 20:38 UTCEG score recompute
  25. 2026-08-22 20:38 UTCEG score recompute
  26. 2026-08-21 23:49 UTCEPSS rescore
  27. 2026-08-21 00:19 UTCEG score recompute
  28. 2026-08-20 22:55 UTCEPSS rescore
  29. 2026-08-20 02:10 UTCEG score recompute
  30. 2026-08-19 17:04 UTCEPSS rescore
  31. 2026-08-18 20:47 UTCEG score recompute
  32. 2026-08-18 13:48 UTCEPSS rescore
  33. 2026-08-17 16:48 UTCEG score recompute
  34. 2026-08-17 13:47 UTCEPSS rescore
  35. 2026-08-16 18:23 UTCEG score recompute
  36. 2026-08-16 14:56 UTCEPSS rescore
  37. 2026-08-16 02:14 UTCEPSS rescore
  38. 2026-08-15 20:15 UTCEG score recompute
  39. 2026-08-15 01:30 UTCEPSS rescore
  40. 2026-08-13 01:49 UTCEG score recompute
  41. 2026-08-12 13:51 UTCEPSS rescore
  42. 2026-08-12 03:41 UTCEG score recompute
  43. 2026-08-11 05:32 UTCEG score recompute
  44. 2026-08-11 00:00 UTCEPSS rescore
  45. 2026-08-10 07:24 UTCEG score recompute
  46. 2026-08-09 13:46 UTCEPSS rescore
  47. 2026-08-09 09:15 UTCEG score recompute
  48. 2026-08-08 16:37 UTCEPSS rescore
  49. 2026-08-06 14:50 UTCEG score recompute
  50. 2026-08-06 13:47 UTCEPSS rescore
  51. 2026-08-05 19:17 UTCEPSS rescore
  52. 2026-08-04 18:27 UTCEG score recompute
  53. 2026-08-04 15:10 UTCEPSS rescore
  54. 2026-08-04 10:39 UTCEPSS rescore
  55. 2026-08-03 20:19 UTCEG score recompute
  56. 2026-08-03 10:36 UTCEPSS rescore
  57. 2026-08-02 22:10 UTCEG score recompute
  58. 2026-08-02 02:27 UTCEPSS rescore
  59. 2026-08-02 00:02 UTCEG score recompute
  60. 2026-08-01 04:16 UTCEPSS rescore
  61. 2026-07-31 03:22 UTCEG score recompute
  62. 2026-07-30 16:28 UTCEPSS rescore
  63. 2026-07-30 05:13 UTCEG score recompute
  64. 2026-07-30 01:30 UTCEPSS rescore
  65. 2026-07-30 01:30 UTCEPSS rescore
  66. 2026-07-29 07:04 UTCEG score recompute
  67. 2026-07-28 15:37 UTCEPSS rescore
  68. 2026-07-28 08:52 UTCEG score recompute
  69. 2026-07-27 14:14 UTCEPSS rescore
  70. 2026-07-27 10:42 UTCEG score recompute
  71. 2026-07-26 14:54 UTCEPSS rescore
  72. 2026-07-26 14:54 UTCEPSS rescore
  73. 2026-07-26 12:34 UTCEG score recompute
  74. 2026-07-25 14:18 UTCEPSS rescore
  75. 2026-07-25 14:18 UTCEPSS rescore

Related CVEs(same product + same CWE)

Same product

1 shown

PyPI:aqt

Frequently asked(5)

What is CVE-2026-58266?
CVE-2026-58266 is a medium vulnerability published on July 7, 2026. Anki is a program for creating and reviewing flashcards. Prior to 25.09.4, Anki's webview-based pages communicate with the Rust backend using an internal localhost API, and user scripts included via iframes in the editor can access this API despite protections intended to block reviewer and editor…
When was CVE-2026-58266 disclosed?
CVE-2026-58266 was first published on July 7, 2026, with the most recent update on July 8, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-58266 actively exploited?
CVE-2026-58266 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (11th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-58266?
CVE-2026-58266 has a CVSS base score of 6.5 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-58266?
A fix for CVE-2026-58266 is available: update to the fixed version the vendor names in its advisory.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-58266

Explore →

Is Your Infrastructure Affected by CVE-2026-58266?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Book a Demo →Browse All CVEs