CVE-2015-8710

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2022-05-13. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 5%CVSS: 9.8Exploit: None knownExposed: 0

A fix is available — apply it.

The htmlParseComment function in HTMLparser.c in libxml2 allows attackers to obtain sensitive information, cause a denial of service (out-of-bounds heap memory access and application crash), or possibly have unspecified other impact via an unclosed HTML comment.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
51(Track)
EG Risk 51/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity98% × 45%
Exploitation5% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
5%
EPSS %ILE
91%
KEV
Not listed

Published

April 11, 2016

Last Modified

June 17, 2026

Advisory Details (7)

Auto-updated Aug 18, 2026
No patch confirmed yet.
generic

HackerOne

https://hackerone.com/reports/57125#activity-384861
generic

Bug 746048 – parsing an unclosed comment can result in `Conditional jump or move depends on uninitialised value(s)` and unsafe memory access

https://bugzilla.gnome.org/show_bug.cgi?id=746048
generic

CVE-2015-8710 - PSIRT.COM

http://www.securityfocus.com/bid/79811
generic

oss-security - Re: libxml2 issue: out-of-bounds memory access when parsing an unclosed HTML comment

http://www.openwall.com/lists/oss-security/2015/12/31/7
generic

oss-security - Re: libxml2 issue: out-of-bounds memory access when parsing an unclosed HTML comment

http://www.openwall.com/lists/oss-security/2015/09/13/1
generic

oss-security - libxml2 issue: out-of-bounds memory access when parsing an unclosed HTML comment

http://www.openwall.com/lists/oss-security/2015/04/19/4
generic

[SECURITY] [DSA 3430-1] libxml2 security update

http://www.debian.org/security/2015/dsa-3430

Patch Availability(4)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulibxml2 (2.9.2+zdfsg1-4ubuntu0.3) @ wily2026-05-20ubuntu
redhatlibxml22016-05-17redhat
redhatlibxml2-0:2.9.1-6.el7_2.22015-12-07redhat
redhatlibxml2-0:2.7.6-20.el6_7.12015-12-07redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(7 across 7 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
libxml2—2.9.2+really2.9.1+dfsg1-0.1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
libxml2—2.9.2+really2.9.1+dfsg1-0.1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
libxml2—2.9.2+really2.9.1+dfsg1-0.1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
libxml2—2.9.2+really2.9.1+dfsg1-0.1—
Debian:6.0(1)
PackageVulnerable rangeFixed inDependents
libxml22.7.8.dfsg-2 ... 2.7.8.dfsg-2+squeeze9 (12 versions)2.7.8.dfsg-2+squeeze12—
Debian:7(1)
PackageVulnerable rangeFixed inDependents
libxml22.8.0+dfsg1-7+nmu1 ... 2.8.0+dfsg1-7+wheezy4 (7 versions)2.8.0+dfsg1-7+wheezy5—
Debian:8(1)
PackageVulnerable rangeFixed inDependents
libxml22.9.1+dfsg1-52.9.1+dfsg1-5+deb8u1—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

All Vendor Advisories

(4)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 6× in last 7d / 26× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 139 total refreshes for this CVE.

  1. 2026-08-20 22:50 UTCEPSS rescore
  2. 2026-08-19 16:59 UTCEPSS rescore
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  25. 2026-07-23 01:20 UTCEG score recompute
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  1. 2026-07-23 00:21 UTCEG score recompute
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  22. 2026-07-08 15:10 UTCEPSS rescore
  23. 2026-07-08 03:05 UTCOSV refresh
  24. 2026-07-07 13:42 UTCEPSS rescore
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  48. 2026-06-19 14:55 UTCOSV refresh
  49. 2026-06-18 17:50 UTCEPSS rescore
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  74. 2026-05-31 22:28 UTCEPSS rescore
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Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2015-8710?
CVE-2015-8710 is a critical vulnerability published on April 11, 2016. The htmlParseComment function in HTMLparser.c in libxml2 allows attackers to obtain sensitive information, cause a denial of service (out-of-bounds heap memory access and application crash), or possibly have unspecified other impact via an unclosed HTML comment.
When was CVE-2015-8710 disclosed?
CVE-2015-8710 was first published in the National Vulnerability Database on April 11, 2016, with the most recent update on June 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2015-8710 actively exploited?
CVE-2015-8710 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 5% probability of exploitation in the next 30 days, which ranks it in the top 8.6% of all scored CVEs.
What is the CVSS score of CVE-2015-8710?
CVE-2015-8710 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2015-8710?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2015-8710, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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