GHSA-7hp2-xwpj-95jq · Severity: high · Ecosystem: rubygems — Denial of service or RCE from libxml2 and libxslt
dict.c in libxml2 allows remote attackers to cause a denial of service (heap-based buffer over-read and application crash) via an unexpected character immediately after the "<!DOCTYPE html" substring in a crafted HTML document.
Conclusion & alert: CVE-2015-8806 is rated Moderate Risk (61.7/100): CVSS High severity, with high exploitation likelihood (EPSS 4.96%, 91th percentile). Core evidence: EPSS ranks this CVE among the most likely to be exploited in the near term. Mandatory action: High exploitation likelihood—assess exposure and prioritize remediation.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-07-02 | 5.12% | 4.96% | -0.16% |
| 2 | 2026-06-15 | 8.57% | 5.12% | -3.44% |
| 3 | 2026-05-13 | — | 8.57% | — |
Full EPSS history (20 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 7.5 | 3.1 | HIGH |
|
3.9 | 3.6 | [email protected] |
| 5.0 | 2.0 | MEDIUM |
|
10.0 | 2.9 | [email protected] |
GHSA-7hp2-xwpj-95jq · Severity: high · Ecosystem: rubygems — Denial of service or RCE from libxml2 and libxslt
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
not yet assigned | CVE-2015-8806 not yet assigned priority: Debian including 1 source packages (libxml2), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2015-8806 |
gentoo
|
normal | CVE-2015-8806: 1 GLSA(s) (201701-37), 1 atom(s) (dev-libs/libxml2); latest impact normal. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2015-8806 |
redhat
|
— | — | https://access.redhat.com/security/cve/CVE-2015-8806 |
suse
|
medium | CVE-2015-8806 severity moderate: SUSE including 15 source package names (libxml2-2-2.9.1-24.1, libxml2-2-32bit-2.9.1-24.1, …), 72 product×package rows across 19 product lines (SUSE Linux Enterprise Desktop 12, SUSE Linux Enterprise Desktop 12 SP1, … (19 product lines)): Fixed 72. | https://www.suse.com/security/cve/CVE-2015-8806/ |
ubuntu
|
low | CVE-2015-8806 low priority: Ubuntu including 1 source packages (libxml2), 7 status rows across 7 suites (precise, trusty, upstream, wily, xenial, yakkety, zesty): released 4, not-affected 2, needs-triage 1. | https://ubuntu.com/security/CVE-2015-8806 |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| xmlsoft | libxml2 | < 2.9.4 | cpe:2.3:a:xmlsoft:libxml2:*:*:*:*:*:*:*:* |
| canonical | ubuntu_linux | 12.04 | cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:* |
| canonical | ubuntu_linux | 14.04 | cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:* |
| canonical | ubuntu_linux | 15.10 | cpe:2.3:o:canonical:ubuntu_linux:15.10:*:*:*:*:*:*:* |
| canonical | ubuntu_linux | 16.04 | cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* |
| debian | debian_linux | 8.0 | cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* |
| URL | Tags |
|---|---|
| http://www.openwall.com/lists/oss-security/2016/02/03/5 | Mailing List Third Party Advisory |
| http://www.oracle.com/technetwork/topics/security/bulletinjul2016-3090568.html | Third Party Advisory |
| http://www.securityfocus.com/bid/82071 | Third Party Advisory VDB Entry |
| http://www.ubuntu.com/usn/USN-2994-1 | Third Party Advisory |
| https://bugzilla.gnome.org/show_bug.cgi?id=749115 | Issue Tracking Vendor Advisory |
| https://security.gentoo.org/glsa/201701-37 | Third Party Advisory |
| https://www.debian.org/security/2016/dsa-3593 | Third Party Advisory |