Error handling for script execution was incorrectly isolated from web content
Noroxi assessment
Priority: Monitor (action score 17/100)
- The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
- Probability of exploitation in the next 30 days: 0.24% (FIRST EPSS).
- Anyone who can reach it over the internet can trigger it. No account or password is required. A user must open a link or visit a page. No special conditions are required; it is repeatable.
- Fixed version: firefox (AlmaLinux:10) 128.11.0-1.el10_0; thunderbird (AlmaLinux:10) 128.11.0-1.el10_0.alma.1; firefox (AlmaLinux:8) 128.11.0-1.el8_10.alma.1.
Low priority for now. Upgrade to firefox (AlmaLinux:10) 128.11.0-1.el10_0; thunderbird (AlmaLinux:10) 128.11.0-1.el10_0.alma.1; firefox (AlmaLinux:8) 128.11.0-1.el8_10.alma.1 or later.
Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it
Primary sources: NVD · CVE.org · FIRST EPSS
Error handling for script execution was incorrectly isolated from web content, which could have allowed cross-origin leak attacks. This vulnerability was fixed in Firefox 139, Firefox ESR 115.24, Firefox ESR 128.11, Thunderbird 139, and Thunderbird 128.11.
- BDU:2025-06223
- ALSA-2025:8293
- ALSA-2025:8308
- ALSA-2025:8341
- ALSA-2025:8607
- ALSA-2025:8608
- ALSA-2025:8756
- DLA-4191-1
- DLA-4194-1
- DSA-5926-1
- DSA-5932-1
- openSUSE-SU-2025-20135-1
- openSUSE-SU-2025:15170-1
- openSUSE-SU-2025:15174-1
- openSUSE-SU-2025:15196-1
- openSUSE-SU-2025:15315-1
- openSUSE-SU-2025:20135-1
- RHSA-2025:8293
- RHSA-2025:8308
- RHSA-2025:8341
- Published
- May 27, 2025
- Updated
- Oct 5, 2026
- EPSS
- 0.2% · 15th percentile
- CWE
- CWE-346
Report tools
Action score
17
Monitor
Low priority for now.
- CVSS
- 17 / 40 · 4.3 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.2%
CISA SSVC decision
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
Vulnrichment: CISA's decision-tree inputs.
Get told when this record changes
- Not in KEV: no record of exploitation in the wild
- No public exploit code on record
- A fix has been released
If any of these changes, we'll tell you in the daily email digest.
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Noroxi analysis
What does it mean in your environment?
The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.
We use this product, ask for helpAffected systems
Is your version affected?
Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.
| Vendor | Product | CPE |
|---|---|---|
| mozilla | firefox | cpe:2.3:a:mozilla:firefox |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- mozilla firefoxbefore 115.24.0
- mozilla firefoxbefore 139.0
- mozilla firefox116.0 and later · before 128.11.0
Versions reported by the vendor
Affected version ranges reported by the assigning authority (mozilla). Independent of NVD's CPE analysis and usually ahead of it.
Mozilla Firefox
- 115.24 and later · up to and including 115.*not affected · rpm
- 128.11 and later · up to and including 128.*not affected · rpm
- 139 and laternot affected · rpm
Mozilla Thunderbird
- 128.11 and later · up to and including 128.*not affected · rpm
- 139 and laternot affected · rpm
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| AlmaLinux:10 | firefox | before 128.11.0-1.el10_0 | 128.11.0-1.el10_0 |
| AlmaLinux:10 | thunderbird | before 128.11.0-1.el10_0.alma.1 | 128.11.0-1.el10_0.alma.1 |
| AlmaLinux:8 | firefox | before 128.11.0-1.el8_10.alma.1 | 128.11.0-1.el8_10.alma.1 |
| AlmaLinux:8 | thunderbird | before 128.11.0-1.el8_10.alma.1 | 128.11.0-1.el8_10.alma.1 |
| AlmaLinux:9 | firefox | before 128.11.0-1.el9_6.alma.1 | 128.11.0-1.el9_6.alma.1 |
| AlmaLinux:9 | firefox-x11 | before 128.11.0-1.el9_6.alma.1 | 128.11.0-1.el9_6.alma.1 |
| AlmaLinux:9 | thunderbird | before 128.11.0-1.el9_6.alma.1 | 128.11.0-1.el9_6.alma.1 |
| Debian:11 | firefox-esr | before 128.11.0esr-1~deb11u1 | 128.11.0esr-1~deb11u1 |
| Debian:11 | thunderbird | before 1:128.11.0esr-1~deb11u1 | 1:128.11.0esr-1~deb11u1 |
| Debian:12 | firefox-esr | before 128.11.0esr-1~deb12u1 | 128.11.0esr-1~deb12u1 |
| Debian:12 | thunderbird | before 1:128.11.0esr-1~deb12u1 | 1:128.11.0esr-1~deb12u1 |
| Debian:13 | firefox-esr | before 128.11.0esr-1 | 128.11.0esr-1 |
| Debian:13 | thunderbird | before 1:128.11.0esr-1 | 1:128.11.0esr-1 |
| openSUSE:Leap 16.0 | mozjs128 | before 128.14.0-160000.1.1 | 128.14.0-160000.1.1 |
| openSUSE:Tumbleweed | firefox-esr | before 128.11.0-1.1 | 128.11.0-1.1 |
| openSUSE:Tumbleweed | MozillaFirefox | before 139.0.1-1.1 | 139.0.1-1.1 |
| openSUSE:Tumbleweed | MozillaThunderbird | before 128.11.0-1.1 | 128.11.0-1.1 |
| openSUSE:Tumbleweed | mozjs128 | before 128.12.0-1.1 | 128.12.0-1.1 |
| Red Hat:enterprise_linux:10.0 | firefox | before 0:128.11.0-1.el10_0 | 0:128.11.0-1.el10_0 |
| Red Hat:enterprise_linux:10.0 | firefox-debuginfo | before 0:128.11.0-1.el10_0 | 0:128.11.0-1.el10_0 |
| Red Hat:enterprise_linux:10.0 | firefox-debugsource | before 0:128.11.0-1.el10_0 | 0:128.11.0-1.el10_0 |
| Red Hat:enterprise_linux:10.0 | thunderbird | before 0:128.11.0-1.el10_0 | 0:128.11.0-1.el10_0 |
| Red Hat:enterprise_linux:10.0 | thunderbird-debuginfo | before 0:128.11.0-1.el10_0 | 0:128.11.0-1.el10_0 |
| Red Hat:enterprise_linux:10.0 | thunderbird-debugsource | before 0:128.11.0-1.el10_0 | 0:128.11.0-1.el10_0 |
+71
Same product
mozilla: all recordsOther highest-scoring records for the same primary product.
- CVE-2010-3765Mozilla Firefox 3.5.x through 3.5.14 and 3.6.x through 3.6.11, Thunderbird 3.1.6 before 3.1.6 and 3.0.x before 3.0.10, and SeaMonkey 2.x befKEV94Now
- CVE-2019-11708Insufficient vetting of parameters passed with the Prompt:Open IPC message between child and parent processes can result in the non-sandboxeKEV87Now
- CVE-2015-4495The PDF reader in Mozilla Firefox before 39.0.3, Firefox ESR 38.x before 38.1.1, and Firefox OS before 2.2 allows remote attackers to bypassKEV86Now
- CVE-2013-1690Mozilla Firefox before 22.0, Firefox ESR 17.x before 17.0.7, Thunderbird before 17.0.7, and Thunderbird ESR 17.x before 17.0.7 do not properKEV86Now
- CVE-2019-17026Incorrect alias information in IonMonkey JIT compiler for setting array elements could lead to a type confusion.KEV79This week
- CVE-2024-9680An attacker was able to achieve code execution in the content process by exploiting a use-after-free in Animation timelines.KEV76This week
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| almalinux:firefox | 128.11.0-1.el9_6.alma.1 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:firefox-x11 | 128.11.0-1.el9_6.alma.1 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:thunderbird | 128.11.0-1.el9_6.alma.1 · AlmaLinux:9 | Package registry (OSV) |
| debian:firefox-esr | 128.11.0esr-1~deb12u1 · Debian:12 | Package registry (OSV) |
| debian:thunderbird | 1:128.11.0esr-1~deb12u1 · Debian:12 | Package registry (OSV) |
| opensuse:firefox-esr | 128.11.0-1.1 · openSUSE:Tumbleweed | Package registry (OSV) |
| opensuse:MozillaFirefox | 128.11.0-150200.152.185.1 · openSUSE:Leap 15.6 | Package registry (OSV) |
| opensuse:MozillaThunderbird | 128.11.0-150200.8.221.1 · openSUSE:Leap 15.6 | Package registry (OSV) |
| opensuse:mozjs128 | 128.14.0-160000.1.1 · openSUSE:Leap 16.0 | Package registry (OSV) |
| red hat:firefox | 0:128.11.0-1.el9_6 · Red Hat:enterprise_linux:9::appstream | Package registry (OSV) |
| red hat:firefox-debuginfo | 0:128.11.0-1.el9_6 · Red Hat:enterprise_linux:9::appstream | Package registry (OSV) |
| red hat:firefox-debugsource | 0:128.11.0-1.el9_6 · Red Hat:enterprise_linux:9::appstream | Package registry (OSV) |
| red hat:firefox-x11 | 0:128.11.0-1.el9_6 · Red Hat:enterprise_linux:9::appstream | Package registry (OSV) |
| red hat:thunderbird | 0:128.11.0-1.el9_0 · Red Hat:rhel_e4s:9.0::appstream | Package registry (OSV) |
| red hat:thunderbird-debuginfo | 0:128.11.0-1.el9_0 · Red Hat:rhel_e4s:9.0::appstream | Package registry (OSV) |
| red hat:thunderbird-debugsource | 0:128.11.0-1.el9_0 · Red Hat:rhel_e4s:9.0::appstream | Package registry (OSV) |
| rocky linux:firefox | 0:128.11.0-1.el9_6 · Rocky Linux:9 | Package registry (OSV) |
| rocky linux:thunderbird | 0:128.11.0-1.el9_6 · Rocky Linux:9 | Package registry (OSV) |
| suse:MozillaFirefox | 128.11.0-112.262.1 · SUSE:Linux Enterprise Server 12 SP5-LTSS | Package registry (OSV) |
| suse:MozillaFirefox | 128.11.0-150200.152.185.1 · SUSE:Linux Enterprise Module for Desktop Applications 15 SP6 | Package registry (OSV) |
| suse:MozillaThunderbird | 128.11.0-150200.8.221.1 · SUSE:Linux Enterprise Module for Package Hub 15 SP6 | Package registry (OSV) |
| suse:mozjs128 | 128.14.0-160000.1.1 · SUSE:Linux Enterprise Server 16.0 | Package registry (OSV) |
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
- CVE-2024-9392238 days apartA compromised content process could have allowed for the arbitrary loading of cross-origin pages.39Monitor
- CVE-2026-2790273 days apartSame-origin policy bypass in the Networking: JAR component39Monitor
- CVE-2026-16349420 days apartSame-origin policy bypass in the DOM: Navigation component39Monitor
- CVE-2026-16358420 days apartSite isolation issue in the Graphics: WebRender component39Monitor
- CVE-2026-16375420 days apartSite isolation issue in the Networking: HTTP component39Monitor
- CVE-2026-84140462 days apartSite isolation issue in the DOM: Navigation component39Monitor
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Anyone who can reach it over the internet can trigger it.
- No account or password is required.
- A user must open a link or visit a page.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- low · data can be read
- Integrity
- none
- Availability
- none
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality impact
- Low
- Integrity impact
- None
- Availability impact
- None
Weakness class (CWE)
CWE-346 · Origin Validation ErrorCVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
nvd-secondary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Attack patterns (CAPEC)
- JSON Hijacking (aka JavaScript Hijacking)CAPEC-111likelihood: High · High
- Cache PoisoningCAPEC-141likelihood: High · High
- DNS Cache PoisoningCAPEC-142likelihood: High · High
- Exploit Script-Based APIsCAPEC-160Medium
- Exploitation of Trusted IdentifiersCAPEC-21likelihood: High · High
- Application API Message Manipulation via Man-in-the-MiddleCAPEC-384Low
- Transaction or Event Tampering via Application API ManipulationCAPEC-385Medium
- Application API Navigation RemappingCAPEC-386Medium
ATT&CK techniques
- Access Token ManipulationT1134
- Access Token Manipulation:Token Impersonation/TheftT1134.001
- Steal Application Access TokenT1528
- Steal Web Session CookieT1539
- Use Alternate Authentication Material:Web Session CookieT1550.004
- Adversary-in-the-Middle: ARP Cache PoisoningT1557.002
- Compromise Infrastructure: DNS ServerT1584.002
Change log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
Show all references (7 more)Show less
- www.mozilla.org/security/advisories/mfsa2025-42/
- www.mozilla.org/security/advisories/mfsa2025-43/
- www.mozilla.org/security/advisories/mfsa2025-44/
- www.mozilla.org/security/advisories/mfsa2025-45/
- www.mozilla.org/security/advisories/mfsa2025-46/
- lists.debian.org/debian-lts-announce/2025/05/msg00043.html
- lists.debian.org/debian-lts-announce/2025/05/msg00046.html
Vendor advisories and official records. Exploit/PoC links are deliberately left out.