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CVE-2023-4045Offscreen Canvas did not properly track cross-origin tainting, which could have been used to access image data from another site in…
- 5.3MediumCVSS base score
- 0.59%Exploitation in 30 daysEPSS · top 51% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
Offscreen Canvas did not properly track cross-origin tainting, which could have been used to access image data from another site in violation of same-origin policy. This vulnerability affects Firefox < 116, Firefox ESR < 102.14, and Firefox ESR < 115.1.
Timeline
ID reserved
By mozilla
Published
- 19 months later
· 19 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | Medium5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
- EPSS (exploitation in 30 days)
- 0.59% · top 51% of all CVEs (12 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: yes · Technical impact: partial
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.3.
Affected products
- affected unspecified – < 116
- affected unspecified – < 102.14
- affected unspecified – < 115.1
References
References8
- https://bugzilla.mozilla.org/show_bug.cgi?id=1833876 (opens in a new tab)x_transferred
- https://www.mozilla.org/security/advisories/mfsa2023-29/ (opens in a new tab)x_transferred
- https://www.mozilla.org/security/advisories/mfsa2023-30/ (opens in a new tab)x_transferred
- https://www.mozilla.org/security/advisories/mfsa2023-31/ (opens in a new tab)x_transferred
- https://www.debian.org/security/2023/dsa-5464 (opens in a new tab)x_transferred
- https://www.debian.org/security/2023/dsa-5469 (opens in a new tab)x_transferred
- https://lists.debian.org/debian-lts-announce/2023/08/msg00008.html (opens in a new tab)x_transferred
- https://lists.debian.org/debian-lts-announce/2023/08/msg00010.html (opens in a new tab)x_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2023-53936 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2023-4045)Record last updated .