CVE-2026-76235

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-08-19. a secondary CVSS source baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.5Exploit: None knownExposed: 0

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

A memory leak flaw was found in cockpit-ws. The login page handler leaks a heap allocation on every unauthenticated request that carries a CockpitLang cookie, allowing a remote unauthenticated attacker to exhaust memory on the host and cause a denial of service.

CVSS v3
7.5
EG Score
7.5(medium)
EG Risk
49(Track)
EG Risk 49/100SSVC: 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
Severity75% × 45%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
29%
KEV
Not listed

Published

August 19, 2026

Last Modified

August 25, 2026

Advisory Details (2)

Auto-updated Aug 19, 2026
Patch available. Sources: redhat.
redhat

2519497 – (CVE-2026-76235) CVE-2026-76235 cockpit-ws: cockpit: cockpit-ws: unauthenticated remote memory leak via CockpitLang cookie in send_login_html

https://bugzilla.redhat.com/show_bug.cgi?id=2519497
redhat Patch Available

CVE-2026-76235 - Red Hat Customer Portal

Affected: Red Hat Enterprise Linux 8 or OpenShift Container Platform 4, is affected by this vulnerability and a fix may be released to a

https://access.redhat.com/security/cve/CVE-2026-76235

Vendor Advisories for CVE-2026-76235(1)

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

Affected Packages

(3 across 3 ecosystems)
Debian:12(1)
PackageVulnerable rangeFixed inDependents
cockpit287-1 ... 367-1 (127 versions)——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
cockpit337-1, 337-1+deb13u1337-1+deb13u2—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
cockpit337-1 ... 366-1~bpo13+1 (34 versions)366-1—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 25× in last 7d / 108× 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 119 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-76235?
CVE-2026-76235 is a high vulnerability published on August 19, 2026. A memory leak flaw was found in cockpit-ws. The login page handler leaks a heap allocation on every unauthenticated request that carries a CockpitLang cookie, allowing a remote unauthenticated attacker to exhaust memory on the host and cause a denial of service.
When was CVE-2026-76235 disclosed?
CVE-2026-76235 was first published in the National Vulnerability Database on August 19, 2026, with the most recent update on August 25, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-76235 actively exploited?
CVE-2026-76235 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 70.8% of all scored CVEs.
What is the CVSS score of CVE-2026-76235?
CVE-2026-76235 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-76235?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-76235, 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.

Dependency Blast Radius

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