CVE-2025-55030 json
Content-Disposition headers incorrectly ignored for some MIME types
published 2025-08-19 14 mo ago modified 2026-10-05 34 d ago also EUVD-2025-25227
- cvss
- 6.1
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 4%
- public exploits
- 0
- none known
Summary
Firefox for iOS would not respect a Content-Disposition header of type Attachment and would incorrectly display the content inline rather than downloading, potentially allowing for XSS attacks. This vulnerability was fixed in Firefox for iOS 142.
Patch / fix
- mozilla firefox 142
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 14 mo ago
Exploit prediction
0.16% chance of exploitation in the next 30 days, higher than 4% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CISA ADP | 3.1 | 6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
| CNA | 3.1 | 6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
Affected products
- Mozilla Firefox for iOS
Classification
- Weakness
-
- CWE-640 Weak Password Recovery Mechanism for Forgotten Password
References
-
mozilla.org
/security/advisories/mfsa2025-68/
vendor-advisory
-
bugzilla.mozilla.org
/show_bug.cgi?id=1976304
issue-tracking, permissions-required
Sources
- CVE List CVE-2025-55030
- NVD CVE-2025-55030
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.