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Fencer Vulns
medium 5.3

CVE-2019-13117 json

Uninitialized read in Nokogiri gem

published 2019-07-01 7 y ago modified 2026-07-18 3 mo ago also EUVD-2022-2387 , GHSA-4hm9-844j-jmxp , JLSEC-2026-578

cvss
5.3
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
6.5%
EPSS 6.5% chance of exploitation in 30 days, percentile 93%
public exploits
0
none known

Summary

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.

Patch / fix

  • rubygems nokogiri 1.10.5
  • julia XSLT_jll 1.1.34+0
  • libxslt Debian 14, Debian 13, Debian 12 1.1.32-2.1

debian advisories DEBIAN-CVE-2019-13117

  • libxslt Ubuntu 16.04 LTS 1.1.28-2.1ubuntu0.3
  • libxslt Ubuntu 18.04 LTS 1.1.29-5ubuntu0.2
  • libxslt Ubuntu Pro 14.04 LTS 1.1.28-2ubuntu0.2+esm1

ubuntu advisories UBUNTU-CVE-2019-13117

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • libxslt SLE Module for Basesystem 15 SP1 1.1.32-3.8.24
  • ardana-db OpenStack Cloud 9 9.0+git.1578936438.b9a9b95-3.16.1
  • ardana-mq OpenStack Cloud 9 9.0+git.1581024903.8e74867-3.10.1
  • ardana-tls OpenStack Cloud 9 9.0+git.1575296665.3fdfe45-3.9.1
  • crowbar-ha OpenStack Cloud Crowbar 9 6.0+git.1574286261.6fd1a34-3.13.2
  • crowbar-ui OpenStack Cloud Crowbar 9 1.3.0+git.1575896697.a01a3a08-17.1
  • keepalived OpenStack Cloud Crowbar 9, OpenStack Cloud 9 2.0.19-3.3.1
  • python-ovs OpenStack Cloud Crowbar 9, OpenStack Cloud 9 2.9.0-3.3.1

suse advisories SUSE-SU-2020:1409-1SUSE-SU-2020:0642-1SUSE-SU-2020:0640-1SUSE-SU-2020:0081-1SUSE-SU-2019:1867-1

  • libxslt openSUSE Tumbleweed 1.1.34-3.2
  • libxslt openSUSE Leap 15.1 1.1.32-lp151.3.6.1
  • libxslt-python openSUSE Leap 15.1 1.1.32-lp151.3.6.1

opensuse advisories openSUSE-SU-2024:11017-1openSUSE-SU-2020:0731-1

  • libxslt Alpine 3.10, Alpine 3.9, Alpine 3.8 1.1.33-r3
  • libxslt Alpine 3.24, Alpine 3.23, Alpine 3.22 +11 more 1.1.34-r0

alpine advisories ALPINE-CVE-2019-13117

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2019-13117 updated cvss 5.3

libxslt: an xsl number with certain format strings could lead to a uninitialized read in xsltNumberFormatInsertNumbers

  • Red Hat Enterprise Linux 5 libxslt Red Hat Enterprise Linux 6 libxslt, libxslt-python
    affected: no fix planned “Out of support scope”
  • Red Hat Enterprise Linux 7 libxslt, libxslt-python Red Hat Enterprise Linux 8 libxslt
    affected: no fix available “Fix deferred”
  • Red Hat OpenStack Platform 9 (Mitaka) libxslt-python Red Hat OpenStack Platform 10 (Newton) libxslt-python Red Hat OpenStack Platform 13 (Queens) libxslt-python Red Hat OpenStack Platform 14 (Rocky) libxslt-python
    affected: no fix planned “Will not fix”
  • Red Hat Storage 3 libxslt, libxslt-python
    affected: no fix available “Fix deferred”

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
partial
Assessed
5 mo ago

Exploit prediction

6.46% chance of exploitation in the next 30 days, higher than 93% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CISA ADP 3.1 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
GitHub 3.1 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
NVD 3.1 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
CNA 3.1 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:P/I:N/A:N
OSV 3.1 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Affected packages

ecosystem package affected fixed in
rubygems nokogiri
<1.10.5
1.10.5
julia XSLT_jll
<1.1.34+0
1.1.34+0

Classification

Weakness
  • CWE-908 Use of Uninitialized Resource

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.