CVE-2023-29539

HIGH
MEDIUM Priority: 0.06 BB Relevance: 68/100
Published: 2023-06-02 Modified: 2026-10-23 First seen: 2026-10-29 Status: active

Attack Surface

Network Low Complexity No Auth Conf. Impact Integ. Impact

CVSS Vector Breakdown

AV: Network
AC: Low
PR: None
UI: Required
S: Unchanged
C: High
I: High
A: High

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.

Weakness Classification (1)

Affected Software (5)

VendorProductVersion
mozilla firefox < 112.0
mozilla firefox_esr < 102.10
mozilla firefox_mobile < 112.0
mozilla focus < 112.0
mozilla thunderbird < 102.10

Bug Bounty Relevance

68 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity

CVSS Score

8.8 / 10.0 v3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS — Exploitation Probability

0.74%
Raw Score 0.007370
Percentile 54.4%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00737
2026-10-28
0.00737

Intelligence Sources

nvd ref →