CVE-2016-9318: canonical ubuntu_linux
Vulnerability summary
CVE-2016-9318 is a medium (CVSS 5.5) vulnerability in canonical ubuntu_linux. EPSS estimates a 2.94% chance of exploitation in the next 30 days, higher than 87.1% of scored vulnerabilities. 1 public exploit is recorded.
Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 7 · Related 5Timeline
- 16-11-2016PublishedVulnerability first disclosed.
- 14-10-2026Last modifiedVulnerability information updated.
Description
libxml2 2.9.4 and earlier, as used in XMLSec 1.2.23 and earlier and other products, does not offer a flag directly indicating that the current document may be read but other files may not be opened, which makes it easier for remote attackers to conduct XML External Entity (XXE) attacks via a crafted document.
CVSS metrics
7 scores · 5 sources · 3 versions- NVDNIST5.5MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
- OSV · AlpineEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
- OSV · UbuntuEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
- OSV · DebianEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
EPSS trend
Probability
2.94%
Chance of exploitation in the next 30 days
Percentile
87%
Versus all other CVEs
30-day change
No change 0.00 pp
From 2.94% 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 foundXmlsec
Maturity: poc
Weaknesses
CWE · root causeAffected systems
Known conditions: local access, no authentication, user interaction (CVSS vector). Other conditions: not stated in public data.
Suse12 products
- libxml2-python&distro=SUSE Linux Enterprise Server 11 SP4< 2.7.6-0.64.4
- libxml2-python&distro=SUSE Linux Enterprise Server for SAP Applications 11 SP4< 2.7.6-0.64.4
- libxml2&distro=SUSE Linux Enterprise Desktop 12 SP4< 2.9.4-46.20.1
- libxml2&distro=SUSE Linux Enterprise Server 11 SP4< 2.7.6-0.64.1
- libxml2&distro=SUSE Linux Enterprise Server 12 SP4< 2.9.4-46.20.1
Alpine1 product
- libxml2< 2.9.4-r2
Canonical1 product
- ubuntu_linuxEOL12.04 | 14.04 | 16.04 | 18.04
Debian1 product
- libxml2< 2.9.10+dfsg-2
Ubuntu1 product
- libxml2< 2.9.1+dfsg1-3ubuntu4.13 | < 2.9.3+dfsg1-1ubuntu0.6 | < 2.9.4+dfsg1-6.1ubuntu1.2
Xmlsoft1 product
- libxml2≤ 2.9.4
6 vendors · 17 products
References
21 links- bugzilla.gnome.org/show_bug.cgi?id=772726X Refsource MISCIssue TrackingPatchThird Party AdvisoryVDB Entry
