The encrypted subject of an email message could be incorrectly and permanently assigned to an arbitrary other email message in Thunderbird's local cache. Consequently, when replying to the contaminated email message, the user might accidentally leak the confidential subject to a third-party. While this update fixes the bug and avoids future message contamination, it does not automatically repair existing contaminations. Users are advised to use the repair folder functionality, which is available from the context menu of email folders, which will erase incorrect subject assignments. This vulnerability affects Thunderbird < 115.8.1.
CVE-2024-1936
Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2024-03-05. NVD baseline CVSS 7.5; sources differ by 0.0.
- High severity, but no confirmed exploitation yet
A fix is available — apply it.
- CVSS v3
- 7.5
- EG Score
- 7.5(medium)
- EG Risk
- 50(Track*)EG Risk 50/100SSVC: 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 computedSeverity75% × 45%Exploitation40% × 40%Automatability0% × 15%Action: Watch closely — could escalate to Attend. - EPSS
- 48.7%
- KEV
- Not listed
Published
March 4, 2024
Last Modified
June 30, 2025
References (6)
- security@mozillahttps://bugzilla.mozilla.org/show_bug.cgi?id=1860977
- security@mozillahttps://lists.debian.org/debian-lts-announce/2024/03/msg00022.html
- security@mozillahttps://www.mozilla.org/security/advisories/mfsa2024-11/
- af854a3a-2127-422b-91ae-364da2661108https://bugzilla.mozilla.org/show_bug.cgi?id=1860977
- af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2024/03/msg00022.html
- af854a3a-2127-422b-91ae-364da2661108https://www.mozilla.org/security/advisories/mfsa2024-11/
Patch Availability(10)
| Vendor / Ecosystem | Fixed in / Patch | Released | Source |
|---|---|---|---|
| ubuntu | xul-ext-lightning (1:115.8.1+build1-0ubuntu0.23.10.1) @ mantic | 2026-05-24 | ubuntu |
| redhat | thunderbird-0:115.9.0-1.el8_9 | 2024-03-25 | redhat |
| redhat | thunderbird-0:115.9.0-1.el8_2 | 2024-03-25 | redhat |
| redhat | thunderbird-0:115.9.0-1.el8_4 | 2024-03-25 | redhat |
| redhat | thunderbird-0:115.9.0-1.el8_6 | 2024-03-25 | redhat |
| redhat | thunderbird-0:115.9.0-1.el8_8 | 2024-03-25 | redhat |
| redhat | thunderbird-0:115.9.0-1.el9_2 | 2024-03-25 | redhat |
| redhat | thunderbird-0:115.9.0-1.el7_9 | 2024-03-25 | redhat |
| redhat | thunderbird-0:115.9.0-1.el9_3 | 2024-03-25 | redhat |
| redhat | thunderbird-0:115.9.0-1.el9_0 | 2024-03-25 | redhat |
Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
All Vendor Advisories
(10)
Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.
- Red HatRHSA-2024:1492IMPORTANT2024-03-04
RHSA-2024:1492 — Important
- Red HatRHSA-2024:1493IMPORTANT2024-03-04
RHSA-2024:1493 — Important
- Red HatRHSA-2024:1494IMPORTANT2024-03-04
RHSA-2024:1494 — Important
- Red HatRHSA-2024:1495IMPORTANT2024-03-04
RHSA-2024:1495 — Important
- Red HatRHSA-2024:1496IMPORTANT2024-03-04
RHSA-2024:1496 — Important
- Red HatRHSA-2024:1497IMPORTANT2024-03-04
RHSA-2024:1497 — Important
- Red HatRHSA-2024:1498IMPORTANT2024-03-04
RHSA-2024:1498 — Important
- Red HatRHSA-2024:1499IMPORTANT2024-03-04
RHSA-2024:1499 — Important
- Red HatRHSA-2024:1500IMPORTANT2024-03-04
RHSA-2024:1500 — Important
- UbuntuUSN-6669-1MEDIUM
Thunderbird vulnerabilities
Data Freshness Timeline
(refreshed 10× in last 7d / 46× 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 106 total refreshes for this CVE.
- 2026-07-23 02:32 UTCEG score recompute
- 2026-07-22 23:19 UTCEG score recompute
- 2026-07-22 14:07 UTCEPSS rescore
- 2026-07-21 15:23 UTCEPSS rescore
- 2026-07-20 17:06 UTCEPSS rescore
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- 2026-07-14 17:40 UTCOSV refresh
- 2026-07-13 22:28 UTCEPSS rescore
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- 2026-07-06 16:26 UTCEPSS rescore
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- 2026-06-26 18:39 UTCOSV refresh
- 2026-06-25 13:48 UTCEPSS rescore
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- 2026-06-10 13:21 UTCEPSS rescore
- 2026-06-10 13:21 UTCEPSS rescore
- 2026-06-09 03:00 UTCOSV refresh
- 2026-06-08 14:16 UTCEPSS rescore
- 2026-06-08 14:16 UTCEPSS rescore
- 2026-06-07 15:24 UTCEPSS rescore
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- 2026-05-27 13:40 UTCEPSS rescore
- 2026-05-26 13:43 UTCEPSS rescore
- 2026-05-26 13:43 UTCEPSS rescore
Frequently asked(5)
What is CVE-2024-1936?
When was CVE-2024-1936 disclosed?
Is CVE-2024-1936 actively exploited?
What is the CVSS score of CVE-2024-1936?
How do I remediate CVE-2024-1936?
Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2024-1936
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