The xmlStringGetNodeList function in tree.c in libxml2 2.9.3 and earlier, when used in recovery mode, allows context-dependent attackers to
The xmlStringGetNodeList function in tree.c in libxml2 2.9.3 and earlier, when used in recovery mode, allows context-dependent attackers to cause a denial of service (infinite recursion, stack consumption, and application crash) via a crafted XML document.
- Published
- May 17, 2016
- Updated
- Jun 16, 2026
- EPSS
- 7.0% · 94th percentile
- CWE
- CWE-674
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Report tools
Action score
32
Monitor
Low priority for now.
- CVSS
- 30 / 40 · 7.5 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 2 / 30 · 7.0%
CISA SSVC decision
- Exploitation
- none
- Automatable
- yes
- Technical impact
- partial
Vulnrichment: CISA's decision-tree inputs.
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| opensuse | leap | cpe:2.3:o:opensuse:leap |
| debian | debian linux | cpe:2.3:o:debian:debian_linux |
| hp | icewall federation agent | cpe:2.3:a:hp:icewall_federation_agent |
| hp | icewall file manager | cpe:2.3:a:hp:icewall_file_manager |
| xmlsoft | libxml2 | cpe:2.3:a:xmlsoft:libxml2 |
| canonical | ubuntu linux | cpe:2.3:o:canonical:ubuntu_linux |
| redhat | jboss core services | cpe:2.3:a:redhat:jboss_core_services |
| redhat | enterprise linux desktop | cpe:2.3:o:redhat:enterprise_linux_desktop |
| redhat | enterprise linux eus | cpe:2.3:o:redhat:enterprise_linux_eus |
| redhat | enterprise linux server | cpe:2.3:o:redhat:enterprise_linux_server |
| redhat | enterprise linux server aus | cpe:2.3:o:redhat:enterprise_linux_server_aus |
| redhat | enterprise linux workstation | cpe:2.3:o:redhat:enterprise_linux_workstation |
and 2 more
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- canonical ubuntu linux12.04
- canonical ubuntu linux14.04
- canonical ubuntu linux15.10
- canonical ubuntu linux16.04
- debian debian linux8.0
- hp icewall federation agent3.0
- hp icewall file manager3.0
- opensuse leap42.1
- oracle solaris11.3
- oracle vm server3.3
- oracle vm server3.4
- redhat enterprise linux desktop6.0
- redhat enterprise linux desktop7.0
- redhat enterprise linux eus7.2
- redhat enterprise linux eus7.3
- redhat enterprise linux eus7.4
- redhat enterprise linux eus7.5
- redhat enterprise linux eus7.6
- redhat enterprise linux eus7.7
- redhat enterprise linux server6.0
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Debian:12 | libxml2 | before 2.9.3+dfsg1-1.1 | 2.9.3+dfsg1-1.1 |
| Debian:7 | libxml2 | before 2.8.0+dfsg1-7+wheezy6 | 2.8.0+dfsg1-7+wheezy6 |
| Debian:8 | libxml2 | before 2.9.1+dfsg1-5+deb8u2 | 2.9.1+dfsg1-5+deb8u2 |
| openSUSE:Tumbleweed | python-libxml2 | before 2.9.4-1.4 | 2.9.4-1.4 |
| Red Hat:enterprise_linux:6::client | libxml2 | before 0:2.7.6-21.el6_8.1 | 0:2.7.6-21.el6_8.1 |
| Red Hat:enterprise_linux:6::client | libxml2-debuginfo | before 0:2.7.6-21.el6_8.1 | 0:2.7.6-21.el6_8.1 |
| Red Hat:enterprise_linux:6::client | libxml2-devel | before 0:2.7.6-21.el6_8.1 | 0:2.7.6-21.el6_8.1 |
| Red Hat:enterprise_linux:6::client | libxml2-python | before 0:2.7.6-21.el6_8.1 | 0:2.7.6-21.el6_8.1 |
| Red Hat:enterprise_linux:6::client | libxml2-static | before 0:2.7.6-21.el6_8.1 | 0:2.7.6-21.el6_8.1 |
| Red Hat:enterprise_linux:7::client | libxml2 | before 0:2.9.1-6.el7_2.3 | 0:2.9.1-6.el7_2.3 |
| Red Hat:enterprise_linux:7::client | libxml2-debuginfo | before 0:2.9.1-6.el7_2.3 | 0:2.9.1-6.el7_2.3 |
| Red Hat:enterprise_linux:7::client | libxml2-devel | before 0:2.9.1-6.el7_2.3 | 0:2.9.1-6.el7_2.3 |
| Red Hat:enterprise_linux:7::client | libxml2-python | before 0:2.9.1-6.el7_2.3 | 0:2.9.1-6.el7_2.3 |
| Red Hat:enterprise_linux:7::client | libxml2-static | before 0:2.9.1-6.el7_2.3 | 0:2.9.1-6.el7_2.3 |
| SUSE:Linux Enterprise Desktop 12 | libxml2 | before 2.9.1-20.1 | 2.9.1-20.1 |
| SUSE:Linux Enterprise Desktop 12 | python-libxml2 | before 2.9.1-20.1 | 2.9.1-20.1 |
| SUSE:Linux Enterprise Server 11 SP4 | libxml2-python | before 2.7.6-0.40.3 | 2.7.6-0.40.3 |
| SUSE:Linux Enterprise Software Development Kit 11 SP4 | libxml2 | before 2.7.6-0.40.1 | 2.7.6-0.40.1 |
Same product
opensuse: all recordsOther highest-scoring records for the same primary product.
- CVE-2016-0749The smartcard interaction in SPICE allows remote attackers to cause a denial of service (QEMU-KVM process crash) or possibly execute arbitra42Plan
- CVE-2015-8863Off-by-one error in the tokenadd function in jv_parse.c in jq allows remote attackers to cause a denial of service (crash) via a long JSON-e41Plan
- CVE-2019-18903wicked: Use-after-free when receiving invalid DHCP6 IA_PD option40Plan
- CVE-2019-18902wicked: Use-after-free when receiving invalid DHCP6 client options40Plan
- CVE-2016-4007Multiple unspecified vulnerabilities in the obs-service-extract_file package before 0.3-5.1 in openSUSE Leap 42.1 and before 0.3-3.1 in open40Plan
- CVE-2016-3982Off-by-one error in the bmp_rle4_fread function in pngxrbmp.c in OptiPNG before 0.7.6 allows remote attackers to cause a denial of service (36Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| debian:libxml2 | 2.9.3+dfsg1-1.1 · Debian:12 | Package registry (OSV) |
| opensuse:python-libxml2 | 2.9.4-1.4 · openSUSE:Tumbleweed | Package registry (OSV) |
| red hat:libxml2 | 0:2.7.6-21.el6_8.1 · Red Hat:enterprise_linux:6::client | Package registry (OSV) |
| red hat:libxml2-debuginfo | 0:2.7.6-21.el6_8.1 · Red Hat:enterprise_linux:6::client | Package registry (OSV) |
| red hat:libxml2-devel | 0:2.7.6-21.el6_8.1 · Red Hat:enterprise_linux:6::client | Package registry (OSV) |
| red hat:libxml2-python | 0:2.7.6-21.el6_8.1 · Red Hat:enterprise_linux:6::client | Package registry (OSV) |
| red hat:libxml2-static | 0:2.7.6-21.el6_8.1 · Red Hat:enterprise_linux:6::client | Package registry (OSV) |
| suse:libxml2 | 2.9.1-20.1 · SUSE:Linux Enterprise Desktop 12 | Package registry (OSV) |
| suse:libxml2-python | 2.7.6-0.40.3 · SUSE:Linux Enterprise Server 11 SP4 | Package registry (OSV) |
| suse:python-libxml2 | 2.9.1-20.1 · SUSE:Linux Enterprise Desktop 12 | Package registry (OSV) |
Exploit status
Proof of concept available
A public proof of concept or detection signature exists. Exploit knowledge is out there; don't delay patching.
Evidence
- Proof-of-concept repository on GitHub ×1
Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.
| Source | Kind | Date |
|---|---|---|
| Proof-of-concept repository on GitHub | stars:1 | 2025-10-19 |
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
- Published
- First PoC+3442 d
- TodaySep 30, 2026+3788 d
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Anyone who can reach it over the internet can trigger it.
- No account or password is required.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- none
- Integrity
- none
- Availability
- high · the service can be disrupted
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- None
- Integrity impact
- None
- Availability impact
- High
Weakness class (CWE)
CWE-674 · Uncontrolled RecursionCVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Attack patterns (CAPEC)
ATT&CK techniques
—
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpChange log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
- lists.opensuse.org/opensuse-updates/2016-05/msg00055.html
- lists.opensuse.org/opensuse-updates/2016-05/msg00127.html
- rhn.redhat.com/errata/RHSA-2016-2957.html
- seclists.org/fulldisclosure/2016/May/10
- www.openwall.com/lists/oss-security/2016/03/21/2
- www.openwall.com/lists/oss-security/2016/03/21/3
- www.oracle.com/technetwork/topics/security/bulletinjul2016-3090568.html
- www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html
- www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html
- www.securityfocus.com/bid/84992
- www.securitytracker.com/id/1035335
- www.ubuntu.com/usn/USN-2994-1
- access.redhat.com/errata/RHSA-2016:1292
- h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05157239
- kc.mcafee.com/corporate/index?page=content&id=SB10170
- security.gentoo.org/glsa/201701-37
- www.debian.org/security/2016/dsa-3593
- www.tenable.com/security/tns-2016-18
Vendor advisories and official records. Exploit/PoC links are deliberately left out.