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: 0.6%CVSS: 7.5Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

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
7.5HIGHmedium confidence
EG Risk
49
EG Risk 49/100CISA SSVC

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%
Exploitation1% × 40%
Automatability100% × 15%
CISA SSVC: Track at low or medium mission impact; Attend at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
0.6%
EPSS %ILE
47th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Attend at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

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
redhatMentions a patch (unverified)

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 rangeFix by version rangeDependents
cockpit287-1 ... 368-1~bpo13+1 (130 versions)
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
cockpit337-1, 337-1+deb13u1
  • every version up to 337-1+deb13u2: fixed in 337-1+deb13u2
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
cockpit337-1 ... 366-1~bpo13+1 (34 versions)
  • every version up to 366-1: fixed in 366-1
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 20× in last 7d / 97× 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 179 total refreshes for this CVE.

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

Related CVEs(same product + 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 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 0.6% probability of exploitation in the next 30 days (47th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-76235?
CVE-2026-76235 has a CVSS base score of 7.5 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-76235?
A fix for CVE-2026-76235 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-76235 are linked in the Vendor Advisories panel on this page.

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