Description
Mitigation bypass in the DOM: Security component. This vulnerability was fixed in Firefox 152.
Basic information
- Type
- unreviewed
- Severity
- critical
- Advisory on GitHub
- Open advisory ↗
- Repository advisory
- —
- Source code
- Not specified
- Published (advisory)
- 2026-06-16 15:33:49 UTC
- Updated
- 2026-06-16 21:33:05 UTC
- NVD published
- 2026-06-16
EPSS Score
No EPSS score in this advisory JSON.
CVSS Scores
| Base score |
Version |
Severity |
Vector |
|
9.1
|
3.1 |
—
|
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
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- Attack vector (AV:N)
- Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
- Attack complexity (AC:L)
- Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
- Privileges required (PR:N)
- No account or special rights needed—anonymous or random user is enough.
- User interaction (UI:N)
- Nobody has to click “OK” or open a trap file; it can work without a victim helping.
- Scope (S:U)
- Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
- Confidentiality (C:H)
- Serious risk that confidential data gets exposed in a big way.
- Integrity (I:H)
- They could widely tamper with or forge data—trust in the data is badly hurt.
- Availability (A:N)
- Service keeps running; no real outage angle.
|
CWEs
| CWE id |
Name |
|
CWE-693
|
Protection Mechanism Failure |
cvelogic
Threat Intelligence