CVE-2015-8866: canonical ubuntu_linux
Vulnerability summary
CVE-2015-8866 is a critical (CVSS 9.6) vulnerability in canonical ubuntu_linux. EPSS estimates a 4.17% chance of exploitation in the next 30 days, higher than 90.9% of scored vulnerabilities. 1 public exploit is recorded.
Public exploit (reference, Date unknown)
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 6 · Related 5Timeline
- 22-05-2016PublishedVulnerability first disclosed.
- 06-08-2024Last modifiedVulnerability information updated.
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.
CVSS metrics
4 scores · 2 sources · 3 versions- OSV · UbuntuEcosystem advisory · calculated9.6CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
EPSS trend
Probability
4.17%
Chance of exploitation in the next 30 days
Percentile
91%
Versus all other CVEs
30-day change
No change 0.00 pp
From 4.17% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
1 foundExploit Reference (bugs.php.net)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Known conditions: network-reachable, no authentication, user interaction (CVSS vector). Other conditions: not stated in public data.
Suse2 products
Canonical1 product
- ubuntu_linuxEOL12.04 | 14.04 | 15.10
Php1 product
- php≥ 5.5.0, < 5.5.22 | ≥ 5.6.0, < 5.6.6 | ≥ 7.0.0, < 7.0.27 | ≥ 7.1.0, < 7.1.13 | ≥ 7.2.0, < 7.2.1
Ubuntu1 product
- php5< 5.5.9+dfsg-1ubuntu4.16
5 vendors · 7 products
References
17 links- bugs.launchpad.net/ubuntu/+source/php5/+bug/1509817X Refsource CONFIRMIssue TrackingPatchThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2016-05/msg00031.htmlVendor AdvisoryX Refsource SUSEMailing ListThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2016-05/msg00033.htmlVendor AdvisoryX Refsource SUSEMailing ListThird Party Advisory
Show all 17 references
- www.openwall.com/lists/oss-security/2016/04/24/1Mailing ListX Refsource MLISTPatchThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2016-05/msg00056.htmlVendor AdvisoryX Refsource SUSEMailing ListThird Party Advisory