CVE-2023-29539
Medium
Elevated severity or exploit probability.
CVSS base
8.8
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS — probability of exploitation (30 days)
0.7%
53.0th percentile
CISA KEV
Not listed
Weakness / dates
CWE-476
Published 2023-06-02 · modified 2026-08-19
CVSS breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
| Attack Vector | N | Network |
| Attack Complexity | L | Low |
| Privileges Required | N | None |
| User Interaction | R | Required |
| Scope | U | Unchanged |
| Confidentiality | H | High |
| Integrity | H | High |
| Availability | H | High |
Timeline
- 2023-06-02 — Published (NVD)
- 2026-08-19 — Last modified (NVD)
Description
When handling the filename directive in the Content-Disposition header, the filename would be truncated if the filename contained a NULL character. This could have led to reflected file download attacks potentially tricking users to install malware. This vulnerability affects Firefox < 112, Focus for Android < 112, Firefox ESR < 102.10, Firefox for Android < 112, and Thunderbird < 102.10.
Affected
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1784348
- https://www.mozilla.org/security/advisories/mfsa2023-13/
- https://www.mozilla.org/security/advisories/mfsa2023-14/
- https://www.mozilla.org/security/advisories/mfsa2023-15/
- https://bugzilla.mozilla.org/show_bug.cgi?id=1784348
- https://www.mozilla.org/security/advisories/mfsa2023-13/
- https://www.mozilla.org/security/advisories/mfsa2023-14/
- https://www.mozilla.org/security/advisories/mfsa2023-15/