Incorrect URL truncation
Published Jul 22, 2025
9.8
CRITICALCVSS 3.1
EPSS 0.38%
Description
Focus incorrectly truncated URLs towards the beginning instead of around the origin. This vulnerability was fixed in Firefox 141.
Affected products
No data.
- < 141.0
- < 141.0
No data.
Red Hat Enterprise Linux 10
firefox
Not affected
Red Hat Enterprise Linux 10
rhel10/firefox-flatpak
Not affected
Red Hat Enterprise Linux 10
rhel10/thunderbird-flatpak
Not affected
Red Hat Enterprise Linux 10
thunderbird
Not affected
Red Hat Enterprise Linux 6
firefox
Not affected
Red Hat Enterprise Linux 6
thunderbird
Not affected
Red Hat Enterprise Linux 7
firefox
Not affected
Red Hat Enterprise Linux 7
thunderbird
Not affected
Red Hat Enterprise Linux 8
firefox
Not affected
Red Hat Enterprise Linux 8
thunderbird
Not affected
Red Hat Enterprise Linux 9
firefox
Not affected
Red Hat Enterprise Linux 9
thunderbird
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 10 | firefox | Not affected | n/a |
| Red Hat Enterprise Linux 10 | rhel10/firefox-flatpak | Not affected | n/a |
| Red Hat Enterprise Linux 10 | rhel10/thunderbird-flatpak | Not affected | n/a |
| Red Hat Enterprise Linux 10 | thunderbird | Not affected | n/a |
| Red Hat Enterprise Linux 6 | firefox | Not affected | n/a |
| Red Hat Enterprise Linux 6 | thunderbird | Not affected | n/a |
| Red Hat Enterprise Linux 7 | firefox | Not affected | n/a |
| Red Hat Enterprise Linux 7 | thunderbird | Not affected | n/a |
| Red Hat Enterprise Linux 8 | firefox | Not affected | n/a |
| Red Hat Enterprise Linux 8 | thunderbird | Not affected | n/a |
| Red Hat Enterprise Linux 9 | firefox | Not affected | n/a |
| Red Hat Enterprise Linux 9 | thunderbird | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
Red Hat Product Security rates the severity of this flaw as determined by the Mozilla Foundation Security Advisory.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
1 other source (Red Hat) ▾
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
No CVSS v3.0 score for this CVE.
No CVSS v2.0 score for this CVE.
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
NoneAutomatable
YesTechnical Impact
TotalDecision
n/aAssessed Jul 23, 2025 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2025–2026- EPSS v4
- EPSS v5
Percentile over time
- EPSS v4
- EPSS v5
Table of values (3 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.38% (0.00381) | 29.61th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.35% (0.00352) | 26.83th | v5 (v2026.06.15) |
| Jul 23, 2025 | 0.02% (0.00017) | 2.39th | v4 (v2025.03.14) |
References (7)
- https://access.redhat.com/security/cve/CVE-2025-8043 Vendor Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1970209 ExploitIssue Tracking
- https://bugzilla.redhat.com/show_bug.cgi?id=2382706 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2025-8043
- https://www.cve.org/CVERecord?id=CVE-2025-8043
- https://www.mozilla.org/security/advisories/mfsa2025-56/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2025-61/
| Link | Providers | Tags |
|---|---|---|
| https://access.redhat.com/security/cve/CVE-2025-8043 | Vendor Advisory | |
| https://bugzilla.mozilla.org/show_bug.cgi?id=1970209 | ExploitIssue Tracking | |
| https://bugzilla.redhat.com/show_bug.cgi?id=2382706 | Issue Tracking | |
| https://nvd.nist.gov/vuln/detail/CVE-2025-8043 | ||
| https://www.cve.org/CVERecord?id=CVE-2025-8043 | ||
| https://www.mozilla.org/security/advisories/mfsa2025-56/ | Vendor Advisory | |
| https://www.mozilla.org/security/advisories/mfsa2025-61/ |
Change history (0)
No recorded changes yet.