Improper input validation in Mozilla Firefox
Priority LOW 27CWE-20Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · Low · None
- Fix status
- Fixed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA.
Summary
SVG loaded through "<img>" tags can use "<meta>" tags within the SVG data to set cookies for that page. This vulnerability affects Firefox < 57.
Why it matters now
EPSS 0.01441 73rd percentileScored 2026-11-07
Fix Fixed Firefox (Mozilla): 57
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
Remediation
- Fix · CNA Firefox (Mozilla) Fixed in 57
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
Mozilla Firefox 57
12 records Highest priority Priority MEDIUM 1 MEDIUM, 11 LOW
Other records, highest priority first
- TI-2017-05444 Memory corruption in Mozilla FirefoxPriority MEDIUM 47
- TI-2017-05452 Mixed content blocking of insecure (HTTP) sub-resources in a secure (HTTPS) document was…Priority LOW 35
- TI-2017-05453 Uncontrolled search path in Mozilla FirefoxPriority LOW 34
Timeline
- 2026-10-02 Threatist record created from CVE-2017-7837
- 2026-10-03 Alias added: GHSA-7f82-h9r4-w4qw
References
More Mozilla Firefox vulnerabilities
- TI-2024-08981 Use after free in Mozilla Firefox KEVCVSS 3.1CRITICAL 9.8
- TI-2022-09832 Use after free in Mozilla Firefox KEVCVSS 3.1CRITICAL 9.6
- TI-2019-08769 Improper input validation in Mozilla Firefox ESR KEVCVSS 3.1CRITICAL 10.0
- TI-2010-03577 Mozilla Firefox 3.5.x through 3.5.14 and 3.6.x through 3.6.11, Thunderbird 3.1.6 before… KEVCVSS 3.1CRITICAL 9.8
- TI-2023-04799 Out-of-bounds write in Google Chrome KEVCVSS 3.1HIGH 8.8
- TI-2023-04477 Out-of-bounds write in Google Chrome KEVCVSS 3.1HIGH 8.8
Sources
- CVE-2017-7837 · CVE Program
- CVE-2017-7837 · NVD
- FIRST EPSS
- GHSA-7f82-h9r4-w4qw · GitHub Advisory Database · CC BY 4.0
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