CVE-2024-9393: An attacker could, via a specially crafted multipart response, execute arbitrary JavaScript under the `resource://pdf.js` origin.
Noroxi assessment
Priority: Monitor (action score 30/100)
- 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: 0.39% (FIRST EPSS).
- Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
- According to CISA the attack is automatable: targets can be found by mass scanning.
- Fixed version: firefox (AlmaLinux:8) 128.3.0-1.el8_10.alma.1; thunderbird (AlmaLinux:8) 128.3.0-1.el8_10.alma.1; firefox (AlmaLinux:9) 128.3.0-1.el9_4.alma.1.
- Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).
Low priority for now. Upgrade to firefox (AlmaLinux:8) 128.3.0-1.el8_10.alma.1; thunderbird (AlmaLinux:8) 128.3.0-1.el8_10.alma.1; firefox (AlmaLinux:9) 128.3.0-1.el9_4.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
An attacker could, via a specially crafted multipart response, execute arbitrary JavaScript under the `resource://pdf.js` origin. This could allow them to access cross-origin PDF content. This access is limited to "same site" documents by the Site Isolation feature on desktop clients, but full cross-origin access is possible on Android versions. This vulnerability affects Firefox < 131, Firefox ESR < 128.3, Firefox ESR < 115.16, Thunderbird < 128.3, and Thunderbird < 131.
- BDU:2024-09268
- ALSA-2024:7505
- ALSA-2024:7552
- ALSA-2024:7699
- ALSA-2024:7700
- DLA-3913-1
- DLA-3916-1
- DSA-5783-1
- DSA-5789-1
- openSUSE-SU-2024:14385-1
- openSUSE-SU-2024:14394-1
- openSUSE-SU-2024:14397-1
- RHSA-2024:7505
- RHSA-2024:7552
- RHSA-2024:7621
- RHSA-2024:7622
- RHSA-2024:7646
- RHSA-2024:7699
- RHSA-2024:7700
- RHSA-2024:7702
- Published
- Oct 1, 2024
- Updated
- Jun 17, 2026
- EPSS
- 0.3% · 33th percentile
- CWE
- CWE-346
Report tools
Action score
30
Monitor
Low priority for now.
- CVSS
- 30 / 40 · 7.5 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.3%
CISA SSVC decision
- Exploitation
- none
- Automatable
- yes
- 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 |
| mozilla | firefox esr | cpe:2.3:a:mozilla:firefox_esr |
| mozilla | thunderbird | cpe:2.3:a:mozilla:thunderbird |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- mozilla firefoxbefore 131.0
- mozilla firefox esrbefore 115.16.0
- mozilla firefox esr116.0 and later · before 128.3.0
- mozilla thunderbirdbefore 128.3
- mozilla thunderbird129.0
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
- unspecified and later · before 131affected
Mozilla Firefox ESR
- unspecified and later · before 128.3affected
- unspecified and later · before 115.16affected
Mozilla Thunderbird
- unspecified and later · before 128.3affected
- unspecified and later · before 131affected
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| AlmaLinux:8 | firefox | before 128.3.0-1.el8_10.alma.1 | 128.3.0-1.el8_10.alma.1 |
| AlmaLinux:8 | thunderbird | before 128.3.0-1.el8_10.alma.1 | 128.3.0-1.el8_10.alma.1 |
| AlmaLinux:9 | firefox | before 128.3.0-1.el9_4.alma.1 | 128.3.0-1.el9_4.alma.1 |
| AlmaLinux:9 | firefox-x11 | before 128.3.0-1.el9_4.alma.1 | 128.3.0-1.el9_4.alma.1 |
| AlmaLinux:9 | thunderbird | before 128.3.0-1.el9_4.alma.1 | 128.3.0-1.el9_4.alma.1 |
| Debian:11 | firefox-esr | before 128.3.0esr-1~deb11u2 | 128.3.0esr-1~deb11u2 |
| Debian:11 | thunderbird | before 1:115.16.0esr-1~deb11u1 | 1:115.16.0esr-1~deb11u1 |
| Debian:12 | firefox-esr | before 128.3.0esr-1~deb12u1 | 128.3.0esr-1~deb12u1 |
| Debian:12 | thunderbird | before 1:115.16.0esr-1~deb12u1 | 1:115.16.0esr-1~deb12u1 |
| Debian:13 | firefox-esr | before 128.3.0esr-1 | 128.3.0esr-1 |
| Debian:13 | thunderbird | before 1:128.3.0esr-1 | 1:128.3.0esr-1 |
| openSUSE:Leap 15.5 | MozillaFirefox | before 128.3.1-150200.152.155.1 | 128.3.1-150200.152.155.1 |
| openSUSE:Leap 15.5 | MozillaFirefox | before 128.3.0-150200.152.152.1 | 128.3.0-150200.152.152.1 |
| openSUSE:Leap 15.5 | MozillaThunderbird | before 128.3.0-150200.8.182.1 | 128.3.0-150200.8.182.1 |
| openSUSE:Tumbleweed | MozillaFirefox | before 131.0-1.1 | 131.0-1.1 |
| openSUSE:Tumbleweed | MozillaThunderbird | before 128.3.1-1.1 | 128.3.1-1.1 |
| openSUSE:Tumbleweed | mozjs128 | before 128.3.1-1.1 | 128.3.1-1.1 |
| Red Hat:enterprise_linux:8::appstream | firefox | before 0:128.3.0-1.el8_10 | 0:128.3.0-1.el8_10 |
| Red Hat:enterprise_linux:8::appstream | firefox-debuginfo | before 0:128.3.0-1.el8_10 | 0:128.3.0-1.el8_10 |
| Red Hat:enterprise_linux:8::appstream | firefox-debugsource | before 0:128.3.0-1.el8_10 | 0:128.3.0-1.el8_10 |
| Red Hat:enterprise_linux:8::appstream | thunderbird | before 0:128.3.0-1.el8_10 | 0:128.3.0-1.el8_10 |
| Red Hat:enterprise_linux:8::appstream | thunderbird-debuginfo | before 0:128.3.0-1.el8_10 | 0:128.3.0-1.el8_10 |
| Red Hat:enterprise_linux:8::appstream | thunderbird-debugsource | before 0:128.3.0-1.el8_10 | 0:128.3.0-1.el8_10 |
| Red Hat:enterprise_linux:9::appstream | firefox | before 0:128.3.0-1.el9_4 | 0:128.3.0-1.el9_4 |
+52
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
Published before and after this one in the same product
- ← EarlierCVE-2024-9391Oct 1, 2024 · A user who enables full-screen mode on a specially crafted web page could potentially be prevented from exiting full screen mode.26Monitor
- ← EarlierCVE-2024-9392Oct 1, 2024 · A compromised content process could have allowed for the arbitrary loading of cross-origin pages.39Monitor
- Later →CVE-2024-9394Oct 1, 2024 · An attacker could, via a specially crafted multipart response, execute arbitrary JavaScript under the `resource://devtools` origin.30Monitor
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 | 128.3.0-1.el9_4.alma.1 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:firefox-x11 | 128.3.0-1.el9_4.alma.1 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:thunderbird | 128.3.0-1.el9_4.alma.1 · AlmaLinux:9 | Package registry (OSV) |
| debian:firefox-esr | 128.3.0esr-1~deb12u1 · Debian:12 | Package registry (OSV) |
| debian:thunderbird | 1:115.16.0esr-1~deb12u1 · Debian:12 | Package registry (OSV) |
| opensuse:MozillaFirefox | 128.3.0-150200.152.152.1 · openSUSE:Leap 15.5 | Package registry (OSV) |
| opensuse:MozillaThunderbird | 128.3.0-150200.8.182.1 · openSUSE:Leap 15.5 | Package registry (OSV) |
| opensuse:mozjs128 | 128.3.1-1.1 · openSUSE:Tumbleweed | Package registry (OSV) |
| red hat:firefox | 0:128.3.0-1.el9_4 · Red Hat:enterprise_linux:9::appstream | Package registry (OSV) |
| red hat:firefox-debuginfo | 0:128.3.0-1.el9_4 · Red Hat:enterprise_linux:9::appstream | Package registry (OSV) |
| red hat:firefox-debugsource | 0:128.3.0-1.el9_4 · Red Hat:enterprise_linux:9::appstream | Package registry (OSV) |
| red hat:firefox-x11 | 0:128.3.0-1.el9_4 · Red Hat:enterprise_linux:9::appstream | Package registry (OSV) |
| red hat:thunderbird | 0:128.3.0-1.el9_4 · Red Hat:enterprise_linux:9::appstream | Package registry (OSV) |
| red hat:thunderbird-debuginfo | 0:128.3.0-1.el9_4 · Red Hat:enterprise_linux:9::appstream | Package registry (OSV) |
| red hat:thunderbird-debugsource | 0:128.3.0-1.el9_4 · Red Hat:enterprise_linux:9::appstream | Package registry (OSV) |
| rocky linux:firefox | 0:128.3.0-1.el8_10 · Rocky Linux:8 | Package registry (OSV) |
| rocky linux:thunderbird | 0:128.3.0-1.el8_10 · Rocky Linux:8 | Package registry (OSV) |
| suse:MozillaFirefox | 128.3.0-112.228.1 · SUSE:Linux Enterprise Software Development Kit 12 SP5 | Package registry (OSV) |
| suse:MozillaFirefox | 128.3.0-150200.152.152.1 · SUSE:Linux Enterprise Module for Desktop Applications 15 SP5 | Package registry (OSV) |
| suse:MozillaThunderbird | 128.3.0-150200.8.182.1 · SUSE:Linux Enterprise Module for Package Hub 15 SP5 | 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-2024-93920 days apartA compromised content process could have allowed for the arbitrary loading of cross-origin pages.39Monitor
- CVE-2026-2790511 days apartSame-origin policy bypass in the Networking: JAR component39Monitor
- CVE-2025-9180322 days apartSame-origin policy bypass in the Graphics: Canvas2D component32Monitor
- CVE-2025-23109102 days apartAddress bar spoofing on iOS using long hostnames26Monitor
- CVE-2025-14331434 days apartSame-origin policy bypass in the Request Handling component26Monitor
- CVE-2023-37210454 days apartA website could prevent a user from exiting full-screen mode via alert and prompt calls.26Monitor
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).
National notice (Türkiye Cybersecurity Directorate / USOM)
Official security notices citing this record; remediation advice is on the agency's page.
- TR-24-1585 · Oct 2, 2024(Mozilla Firefox Güvenlik Bildirimi)
Technical details
Attack conditions
- Anyone who can reach it over the internet can trigger it.
- No account or password is required.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- high · data can be read
- Integrity
- none
- Availability
- none
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- High
- 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:N/S:U/C:H/I:N/A:N
nvd-primary
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/mfsa2024-46/
- www.mozilla.org/security/advisories/mfsa2024-47/
- www.mozilla.org/security/advisories/mfsa2024-48/
- www.mozilla.org/security/advisories/mfsa2024-49/
- www.mozilla.org/security/advisories/mfsa2024-50/
- lists.debian.org/debian-lts-announce/2024/10/msg00004.html
- lists.debian.org/debian-lts-announce/2024/10/msg00006.html
Vendor advisories and official records. Exploit/PoC links are deliberately left out.