CVE-2026-55741

HIGHPre-NVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-06-18. a secondary CVSS source baseline 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
8.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.8Exploit: None knownExposed: 0

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

Cotonti 1.0.0 (master branch, commit f43f1fc3) is vulnerable to Cross-Site Request Forgery in the administration configuration handler. In system/admin/admin.config.php, the configuration update action ('a=update') processes POST data via cot_config_update_options() without calling cot_check_xg() to validate the anti-CSRF token (the 'x' parameter), unlike other admin handlers (e.g. admin.structure.php, admin.cache.php). A remote attacker who lures an authenticated administrator into visiting a malicious page can force the browser to submit a forged request that modifies arbitrary core, module, or plugin configuration options, which can be leveraged to weaken security or enable further compromise.

CVSS v3
8.8
EG Score
8.8(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
Severity88% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
7%
KEV
Not listed

Published

June 18, 2026

Last Modified

June 22, 2026

Advisory Details (2)

Auto-updated Jun 18, 2026
No patch confirmed yet.
generic

Cotonti/system/admin/admin.config.php at f43f1fc38ba4e02027786dad9dac1435c7c52b30 · Cotonti/Cotonti · GitHub

https://github.com/Cotonti/Cotonti/blob/f43f1fc38ba4e02027786dad9dac1435c7c52b30/system/admin/admin.config.php#L55
generic

GitHub - Cotonti/Cotonti: Fast, reliable and flexible PHP CMF/CMS · GitHub

https://github.com/Cotonti/Cotonti

Vendor Advisories for CVE-2026-55741(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 23× in last 7d / 85× 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 138 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-55741?
CVE-2026-55741 is a high vulnerability published on June 18, 2026. Cotonti 1.0.0 (master branch, commit f43f1fc3) is vulnerable to Cross-Site Request Forgery in the administration configuration handler. In system/admin/admin.config.php, the configuration update action ('a=update') processes POST data via cotconfigupdateoptions() without calling cotcheck_xg() to…
When was CVE-2026-55741 disclosed?
CVE-2026-55741 was first published in the National Vulnerability Database on June 18, 2026, with the most recent update on June 22, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-55741 actively exploited?
CVE-2026-55741 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 92.6% of all scored CVEs.
What is the CVSS score of CVE-2026-55741?
CVE-2026-55741 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2026-55741?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-55741, 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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