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CVE-2018-12373
dDecrypted S/MIME parts hidden with CSS or the plaintext HTML tag can leak plaintext when included in a HTML reply/forward. This…
Medium6.5EPSS 2.4%
- Published
- Updated
- Reserved
- Assigned by
- mozilla
Description
dDecrypted S/MIME parts hidden with CSS or the plaintext HTML tag can leak plaintext when included in a HTML reply/forward. This vulnerability affects Thunderbird < 52.9.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.0 | Medium6.5 | CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N |
- EPSS (exploitation in 30 days)
- 2.4% · top 16% of all CVEs (6 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.5.
Weakness
- S/MIME plaintext can be leaked through HTML reply/forward
- CWE-200 (opens in a new tab)All about CWE-200 and its CVEs
Affected products
- affected unspecified – < 52.9
References (10)
- 104613 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- GLSA-201811-13 (opens in a new tab)vendor-advisoryx_refsource_GENTOOx_transferred
- https://www.mozilla.org/security/advisories/mfsa2018-18/ (opens in a new tab)x_refsource_CONFIRMx_transferred
- DSA-4244 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- https://bugzilla.mozilla.org/show_bug.cgi?id=1464056 (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://bugzilla.mozilla.org/show_bug.cgi?id=1464667 (opens in a new tab)x_refsource_CONFIRMx_transferred
- RHSA-2018:2252 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- [debian-lts-announce] 20180714 [SECURITY] [DLA 1425-1] thunderbird security update (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- RHSA-2018:2251 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- USN-3714-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2018-12373)Record last updated .