CVE-2023-2255
A public proof of concept exists; no exploitation attested.
- Published2023-05-25
- Fixed in7.5.3 · 7.4.7
- WeaknessCWE-264
Am I affected?
Debian, Ubuntu or Red Hat sometimes backport a fix without changing the upstream version number: such a version reads « to verify », never « affected ».With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.
Description
Improper access control in editor components of The Document Foundation LibreOffice allowed an attacker to craft a document that would cause external links to be loaded without prompt. In the affected versions of LibreOffice documents that used "floating frames" linked to external files, would load the contents of those frames without prompting the user for permission to do so. This was inconsistent with the treatment of other linked content in LibreOffice. This issue affects: The Document Foundation LibreOffice 7.4 versions prior to 7.4.7; 7.5 versions prior to 7.5.3.
Timeline
dates in UTC- 2023-05-2520:15CVE publishedNVD
- 2026-10-2319:23First public proof of conceptPoC-in-GitHub
Observed activity
isMalicious corpus · updated 2026-10-23 21:37 UTCBlock these indicators
- Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2023-2255?format=txt
- CSV export: https://api.ismalicious.com/edl/cve/CVE-2023-2255?format=csv
- TAXII collection of exploited CVEs
- The EDL and CSV take an API key on the Pro plan.
Versions per branch
NVD| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 7.5 | ≥ 7.5.0, < 7.5.3 | 7.5.3 | NVD |
| 7.4 | ≥ 7.4.0, < 7.4.7 | 7.4.7 | NVD |
| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 11.0 | = 11.0 | no fix published | NVD |
as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.
Distribution builds and vendor advisories
Packages from OSV.dev and products from the vendors' CSAF advisories.
version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.
Packages
- libreofficeAlmaLinux:9all versions · fixed in 1:7.1.8.1-11.el9.almaand 178 other packages
- libreofficeAlmaLinux:8all versions · fixed in 1:6.4.7.2-15.el8.almaand 171 other packages
Fix
- Update Libreoffice to 7.5.3 · 7.4.7
Advisories and patches
- www.libreoffice.orgVendor Advisory
Detection
read 2026-10-23 19:23 UTC- Nuclei template
- none so far ProjectDiscovery
- Exploit-DB
- no entry Exploit-DB
- Proof-of-concept repositories
- 3 repositories, unverifiedelweth-sec/CVE-2023-2255SaintMichae64/CVE-2023-2255G4sp4rCS/CVE-2023-2255 PoC-in-GitHub
Sources
- NVDCVSS 3.15.3read 2026-10-23
- CNAweakness (CWE)CWE-264read 2026-10-23
- FIRST EPSSEPSS score2.2 %2026-10-23
- PoC-in-GitHubproof of concept3read 2026-10-23
- OSVaffected packages—
Technical details
- CVSS v3 Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
- Published
- 2023-05-25
- Last Modified
- 2026-06-17
- NVD status
- Modified
Frequently asked questions
What is CVE-2023-2255?
Is CVE-2023-2255 actively exploited?
What is the CVSS score for CVE-2023-2255?
Running libreoffice? Hear about its next vulnerability
Surveillance reads the versions in your stack — a domain, a lockfile or a list — checks each CVE against the ranges its sources publish, and alerts you when one you run is exploited or enters CISA KEV. A version it cannot read stays « version not verified ».
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Related vulnerabilities
Same product first, then the same vendor advisory and the same publication week.