CVE-2019-13117

What it is

In numbers.c in libxslt 1.1.33, an xsl:number with certain format strings could lead to a uninitialized read in xsltNumberFormatInsertNumbers. This could allow an attacker to discern whether a byte on the stack contains the characters A, a, I, i, or 0, or any other character.

At a glance

Exploitability

Can be exploited over the network without logging in. Limited direct impact.

Exploit odds

6.5% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2019-07-01 02:15 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-17 02:16 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 6.5% in the next 30 days (EPSS).
• Severity: 5.3 MEDIUM (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2019-07-01 02:15 UTC

Last modified

2026-06-17 02:16 UTC

Exploit probability

6.5% · EPSS, next 30 days

Weakness

CWE-908

Record status

Modified

Affected

• Xmlsoft Libxslt 1.1.33
• Debian Linux 8.0
• Canonical Ubuntu Linux 12.04
• Canonical Ubuntu Linux 14.04
• Canonical Ubuntu Linux 16.04
• Canonical Ubuntu Linux 18.04
• Canonical Ubuntu Linux 19.04
• Canonical Ubuntu Linux 19.10

Attack profile CVSS 3.1 · 5.3

Attack vector

Network

Complexity

Low

Privileges needed

None

User interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

None

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2019-13117.md and follow it. Check whether this project is affected by CVE-2019-13117. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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