CVE-2023-34411: The xml-rs crate before 0.8.14 for Rust and Crab allows a denial of service (panic) via an invalid <! token (s

Q: How do I fix CVE-2023-34411?

xml library: upgrade to 0.8.14. Exact commands for each OS are on this page.

Q: Is CVE-2023-34411 being exploited?

CVE-2023-34411 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2023-34411 affect?

CVE-2023-34411 affects xml library. Severity is high (CVSS 7.5). The xml-rs crate before 0.8.14 for Rust and Crab allows a denial of service (panic) via an invalid <! token (such as <!DOCTYPEs/%<!A nesting) in an XML document. The earliest affected version is 0.8.9.

Q: How urgent is CVE-2023-34411?

Priority 53/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

This week

HIGH 7.5REMOTEUPGRADE

CVE-2023-34411 is a high-severity flaw (CVSS 7.5) affecting xml library. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The xml-rs crate before 0.8.14 for Rust and Crab allows a denial of service (panic) via an invalid <! token (such as <!DOCTYPEs/%<!A nesting) in an XML document. The earliest affected version is 0.8.9.

Why this priority

High severity
Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.2% (top 33%)
CISA exploited list	No
Weakness	CWE-611
Published	2023-06-05
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: xml library project

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2023-06-05 04:15 UTCPublished CVE record published
2026-06-17 06:03 UTCUpdated Record last modified

xml library project xml library UPGRADE

Affected: < 0.8.14

Fixed in: 0.8.14

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy xml-library || rpm -q xml-library || xml-library --version

2. UPGRADE to 0.8.14 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade xml-library

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade xml-library

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2023-34411?

xml library: upgrade to 0.8.14. Exact commands for each OS are on this page.

Is CVE-2023-34411 being exploited?

CVE-2023-34411 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2023-34411 affect?

CVE-2023-34411 affects xml library. Severity is high (CVSS 7.5). The xml-rs crate before 0.8.14 for Rust and Crab allows a denial of service (panic) via an invalid <! token (such as <!DOCTYPEs/%<!A nesting) in an XML document. The earliest affected version is 0.8.9.

How urgent is CVE-2023-34411?

Priority 53/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

References

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