CVE-2026-57962

MEDIUMPre-NVD 5.35.3—
EchelonGraph scoreHIGH confidence

Score 5.3 from GitHub Security Advisory published 2026-07-01. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 5.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this week
5.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.3Exploit: None knownExposed: 0

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

A malicious LDAP server, which a Thunderbird user is configured to query for address-book autocomplete, can stash arbitrarily large amounts of attacker-supplied data into the Thunderbird LDAP client until it crashes due to memory exhaustion. This vulnerability was fixed in Thunderbird 152.0.1 and Thunderbird 140.12.1.

CVSS v3
5.3
EG Score
5.3(high)
EG Risk
28(Track)
EG Risk 28/100SSVC: 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
Severity53% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
13%
KEV
Not listed

Published

July 1, 2026

Last Modified

July 6, 2026

Advisory Details (3)

Auto-updated Jul 3, 2026
No patch confirmed yet.
generic

Security Vulnerabilities fixed in Thunderbird 140.12.1 — Mozilla

https://www.mozilla.org/security/advisories/mfsa2026-64/
generic

Security Vulnerabilities fixed in Thunderbird 152.0.1 — Mozilla

https://www.mozilla.org/security/advisories/mfsa2026-63/
generic

Access Denied

https://bugzilla.mozilla.org/show_bug.cgi?id=2042872

Vendor Advisories for CVE-2026-57962(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 17× in last 7d / 66× 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.

  1. 2026-07-27 14:14 UTCEPSS rescore
  2. 2026-07-27 13:06 UTCEG score recompute
  3. 2026-07-27 13:06 UTCGHSA enrichment
  4. 2026-07-26 14:54 UTCEPSS rescore
  5. 2026-07-26 14:54 UTCEPSS rescore
  6. 2026-07-26 13:31 UTCEG score recompute
  7. 2026-07-26 13:31 UTCGHSA enrichment
  8. 2026-07-25 14:18 UTCEPSS rescore
  9. 2026-07-25 14:18 UTCEPSS rescore
  10. 2026-07-24 14:18 UTCEPSS rescore
  11. 2026-07-24 14:18 UTCEPSS rescore
  12. 2026-07-23 14:18 UTCEPSS rescore
  13. 2026-07-23 14:18 UTCEPSS rescore
  14. 2026-07-23 03:20 UTCEG score recompute
  15. 2026-07-22 14:08 UTCEPSS rescore
  16. 2026-07-22 14:08 UTCEPSS rescore
  17. 2026-07-21 15:25 UTCEPSS rescore
  18. 2026-07-20 17:08 UTCEPSS rescore
  19. 2026-07-19 14:31 UTCEPSS rescore
  20. 2026-07-19 14:31 UTCEPSS rescore
  21. 2026-07-19 02:29 UTCEPSS rescore
  22. 2026-07-18 10:04 UTCEPSS rescore
  23. 2026-07-16 17:03 UTCEPSS rescore
  24. 2026-07-16 12:15 UTCGHSA enrichment
  25. 2026-07-15 16:57 UTCEPSS rescore
Show 41 more
  1. 2026-07-15 16:57 UTCEPSS rescore
  2. 2026-07-15 12:59 UTCGHSA enrichment
  3. 2026-07-15 02:00 UTCEPSS rescore
  4. 2026-07-15 02:00 UTCEPSS rescore
  5. 2026-07-14 13:43 UTCGHSA enrichment
  6. 2026-07-13 22:31 UTCEPSS rescore
  7. 2026-07-13 14:32 UTCGHSA enrichment
  8. 2026-07-13 06:13 UTCEPSS rescore
  9. 2026-07-13 06:13 UTCEPSS rescore
  10. 2026-07-12 15:20 UTCGHSA enrichment
  11. 2026-07-12 05:46 UTCEPSS rescore
  12. 2026-07-11 16:08 UTCGHSA enrichment
  13. 2026-07-11 08:27 UTCEPSS rescore
  14. 2026-07-11 08:27 UTCEPSS rescore
  15. 2026-07-10 16:57 UTCGHSA enrichment
  16. 2026-07-09 19:10 UTCEPSS rescore
  17. 2026-07-09 19:10 UTCEPSS rescore
  18. 2026-07-09 17:46 UTCGHSA enrichment
  19. 2026-07-08 18:31 UTCGHSA enrichment
  20. 2026-07-08 15:16 UTCEPSS rescore
  21. 2026-07-08 15:16 UTCEPSS rescore
  22. 2026-07-07 19:18 UTCGHSA enrichment
  23. 2026-07-07 13:46 UTCEPSS rescore
  24. 2026-07-07 13:46 UTCEPSS rescore
  25. 2026-07-06 20:03 UTCGHSA enrichment
  26. 2026-07-06 16:27 UTCEPSS rescore
  27. 2026-07-06 16:27 UTCEPSS rescore
  28. 2026-07-06 02:23 UTCEPSS rescore
  29. 2026-07-06 02:23 UTCEPSS rescore
  30. 2026-07-05 20:51 UTCGHSA enrichment
  31. 2026-07-05 02:31 UTCEPSS rescore
  32. 2026-07-05 02:30 UTCEPSS rescore
  33. 2026-07-04 21:36 UTCGHSA enrichment
  34. 2026-07-04 06:31 UTCEPSS rescore
  35. 2026-07-04 06:31 UTCEPSS rescore
  36. 2026-07-03 22:24 UTCEG score recompute▲ 5.30
  37. 2026-07-03 22:24 UTCGHSA enrichment
  38. 2026-07-01 17:06 UTCNVD updateCVSS v3 → 5.3 · severity → MEDIUM
  39. 2026-07-01 15:07 UTCEPSS rescore
  40. 2026-07-01 03:20 UTCEG score recompute
  41. 2026-07-01 03:20 UTCNVD updatefirst tracked

Frequently asked(5)

What is CVE-2026-57962?
CVE-2026-57962 is a medium vulnerability published on July 1, 2026. A malicious LDAP server, which a Thunderbird user is configured to query for address-book autocomplete, can stash arbitrarily large amounts of attacker-supplied data into the Thunderbird LDAP client until it crashes due to memory exhaustion. This vulnerability was fixed in Thunderbird 152.0.1 and…
When was CVE-2026-57962 disclosed?
CVE-2026-57962 was first published in the National Vulnerability Database on July 1, 2026, with the most recent update on July 6, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-57962 actively exploited?
CVE-2026-57962 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 87.4% of all scored CVEs.
What is the CVSS score of CVE-2026-57962?
CVE-2026-57962 has a CVSS v3.1 base score of 5.3 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-57962?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-57962, 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

Explore the affected products and dependency analysis for CVE-2026-57962

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