CVE-2026-7713

MEDIUMNVD 6.36.3—
EchelonGraph scoreMEDIUM confidence

Score 6.3 from GitHub Security Advisory (severity: LOW) published 2026-05-04. NVD baseline CVSS 6.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Elevated
6.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.3Exploit: Elevated riskExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

A vulnerability was detected in crocodilestick Calibre-Web-Automated up to 4.0.6. Affected by this vulnerability is the function generate_auth_token of the file cps/kobo_auth.py of the component Kobo auth-token Route. The manipulation results in improper authorization. The attack may be performed from remote. The exploit is now public and may be used. Upgrading to version 4.0.7 addresses this issue. The patch is identified as 9f50bb2c16160564c9f8777dc2ceed3eb95e4807. The affected component should be upgraded.

CVSS v3
6.3
EG Score
6.3(medium)
EG Risk
44(Track)
EG Risk 44/100SSVC: Track

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
Severity63% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
19%
KEV
Not listed

Published

May 4, 2026

Last Modified

May 5, 2026

Advisory Details (6)

Auto-updated Jun 14, 2026
Patch available. Sources: github_commit, github_pr, github_release.
github_release Patch Available

v4.0.7

Patch available: new-usemame/Calibre-Web-NextGen v4.0.7

https://github.com/new-usemame/Calibre-Web-NextGen/releases/tag/v4.0.7
github_pr Patch Available

security(kobo_auth): close IDOR in token generation / deletion (#1303 upstream)

Patch available: new-usemame/Calibre-Web-NextGen v4.0.133 (PR #18 merged 2026-05-02)

https://github.com/new-usemame/Calibre-Web-NextGen/pull/18
github_commit Patch Available

commit 9f50bb2c1616 (new-usemame/Calibre-Web-NextGen)

Patch available: new-usemame/Calibre-Web-NextGen v4.0.133 (contains commit 9f50bb2c1616)

https://github.com/new-usemame/Calibre-Web-NextGen/commit/9f50bb2c16160564c9f8777dc2ceed3eb95e4807
generic

IDOR in Kobo Auth Token Generation Enables Account Impersonation · Issue #1303 · crocodilestick/Calibre-Web-Automated · GitHub

https://github.com/crocodilestick/Calibre-Web-Automated/issues/1303
generic

GitHub - crocodilestick/Calibre-Web-Automated: Calibre-Web but Automated and with tons of New Features! Fully automate and simplify your eBook set up! · GitHub

https://github.com/crocodilestick/Calibre-Web-Automated/
generic

Calibre-Web-Automated IDOR · GitHub

https://gist.github.com/menelausx/ef98aa78ed2869ccaa316ff45ed1a440

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 6× in last 7d / 33× 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 172 total refreshes for this CVE.

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

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Frequently asked(5)

What is CVE-2026-7713?
CVE-2026-7713 is a medium vulnerability published on May 4, 2026. A vulnerability was detected in crocodilestick Calibre-Web-Automated up to 4.0.6. Affected by this vulnerability is the function generateauthtoken of the file cps/kobo_auth.py of the component Kobo auth-token Route. The manipulation results in improper authorization. The attack may be performed…
When was CVE-2026-7713 disclosed?
CVE-2026-7713 was first published in the National Vulnerability Database on May 4, 2026, with the most recent update on May 5, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-7713 actively exploited?
CVE-2026-7713 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 80.5% of all scored CVEs.
What is the CVSS score of CVE-2026-7713?
CVE-2026-7713 has a CVSS v3 base score of 6.3 (NVD).
How do I remediate CVE-2026-7713?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-7713, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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