CVE-2017-7816: mozilla firefox Improper Input Validation
CVSS: 5.3v3.0MediumModified
AliasesUBUNTU-CVE-2017-7816
Published 11-06-2018Last modified 05-08-2024
Vulnerability summary
CVE-2017-7816 is a medium (CVSS 5.3) Improper Input Validation vulnerability in mozilla firefox. EPSS estimates a 1.23% chance of exploitation in the next 30 days, higher than 68.5% of scored vulnerabilities. 1 public exploit is recorded.
CVSS score
5.3/10
010
Medium · v3.0 (NVD)EPSS score
1.23%
0%100%
Low · -0.03 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference
Advisory lineage
Upstream 0 · Downstream 3 · Related 3Timeline
- 11-06-2018PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
Description
WebExtensions could use popups and panels in the extension UI to load an "about:" privileged URL, violating security checks that disallow this behavior. This vulnerability affects Firefox < 56.
CVSS metrics
3 scores · 2 sources · 2 versionsMedium 5.3Preferred score · NVD (NIST)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:NSourcesAll 2 agree
- OSV · UbuntuEcosystem advisory · calculated5.3MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Medium 5.0Preferred score · NVD (NIST)
AV:N/AC:L/Au:N/C:P/I:N/A:NSourcesSingle source
EPSS trend
Probability
1.23%
Chance of exploitation in the next 30 days
Percentile
69%
Versus all other CVEs
30-day change
-0.03 pp
From 1.26% on 19-09-2026
19-09-202619-10-2026
EPSS score1.23%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundExploit Reference (bugzilla.mozilla.org)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Mozilla1 product
- firefox≥ unspecified, < 56 | ≤ 55.0.3
Ubuntu1 product
- firefox< 56.0+build6-0ubuntu0.14.04.1 | < 56.0+build6-0ubuntu0.16.04.1 | < 56.0+build6-0ubuntu1
2 vendors · 2 products