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CVE-2015-8866
ext/libxml/libxml.c in PHP before 5.5.22 and 5.6.x before 5.6.6, when PHP-FPM is used, does not isolate each thread from…
Critical9.6EPSS 4.2%
- Published
- Updated
- Reserved
- Assigned by
- mitre
Description
ext/libxml/libxml.c in PHP before 5.5.22 and 5.6.x before 5.6.6, when PHP-FPM is used, does not isolate each thread from libxml_disable_entity_loader changes in other threads, which allows remote attackers to conduct XML External Entity (XXE) and XML Entity Expansion (XEE) attacks via a crafted XML document, a related issue to CVE-2015-5161.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | Critical9.6 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 4.2% · top 9.1% of all CVEs (5 Nov 2026)
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The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.6.
Weakness
Affected products
n/a
- affected n/a
References (12)
- USN-2952-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- http://git.php.net/?p=php-src.git%3Ba=commit%3Bh=de31324c221c1791b26350ba106cc26bad23ace9 (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://bugs.launchpad.net/ubuntu/+source/php5/+bug/1509817 (opens in a new tab)x_refsource_CONFIRMx_transferred
- RHSA-2016:2750 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- USN-2952-2 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- http://www.php.net/ChangeLog-5.php (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://bugs.php.net/bug.php?id=64938 (opens in a new tab)x_refsource_CONFIRMx_transferred
- 87470 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- openSUSE-SU-2016:1274 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- SUSE-SU-2016:1277 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- [oss-security] 20160423 Re: CVE request: PHP issues fixed in 7.0.5, 5.6.20 and 5.5.34 releases (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- openSUSE-SU-2016:1373 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_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)
- 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://trackcve.app/cve/CVE-2015-8866)Record last updated .