CVE-2019-13117

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.

Published: 2019-07-01 Last update: 2026-05-28 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2019-13117 is rated Moderate Risk (52.3/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 4.38%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2019-13117

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-04-16 4.46% 4.38% -0.08%
2 2026-03-04 0.95% 4.46% +3.51%
3 2026-03-01 — 0.95% —

Full EPSS history (58 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2019-13117

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.3 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
 3.9 1.4 [email protected]
5.3 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
 3.9 1.4 134c704f-9b21-4f2e-91b3-4a467353bcc0
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:P/I:N/A:N Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:N)
No availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2019-13117

GitHub Security Advisory for CVE-2019-13117

GHSA-4hm9-844j-jmxp · Severity: medium · Ecosystem: rubygems — Uninitialized read in Nokogiri gem

OS Trackers for CVE-2019-13117

vendor priority summary link
alpine high CVE-2019-13117: 1 source package rows (libxslt); 20 state rows across 10 repos (3.10-main, 3.11-main, 3.12-main, 3.17-main, 3.18-main, 3.19-main, 3.20-main, 3.21-main, 3.22-main, edge-main); fixed 10, open 10. https://security.alpinelinux.org/vuln/CVE-2019-13117
debian low CVE-2019-13117 low priority: Debian including 1 source packages (libxslt), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2019-13117
redhat low — https://access.redhat.com/security/cve/CVE-2019-13117
suse medium CVE-2019-13117 severity moderate: SUSE including 614 source package names (0.45.0.7.7.1:libxslt1-1.1.32-3.8.24, 1.19-3.1:libxslt1-1.1.32-3.8.24, …), 1101 product×package rows across 109 product lines (Container caasp/v4/nginx-ingress-controller, Container ses/7.1/cephcsi/cephcsi, … (109 product lines)): Fixed 870, Known Affected 231. https://www.suse.com/security/cve/CVE-2019-13117/
ubuntu low CVE-2019-13117 low priority: Ubuntu including 1 source packages (libxslt), 7 status rows across 7 suites (bionic, cosmic, disco, eoan, trusty, upstream, xenial): released 4, ignored 1, needs-triage 1, not-affected 1. https://ubuntu.com/security/CVE-2019-13117

Affected software / configurations for CVE-2019-13117

Vendor Product Version Raw CPE
xmlsoft libxslt 1.1.33 cpe:2.3:a:xmlsoft:libxslt:1.1.33:*:*:*:*:*:*:*
debian debian_linux 8.0 cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
canonical ubuntu_linux 12.04 cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:-:*:*:*
canonical ubuntu_linux 14.04 cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:*
canonical ubuntu_linux 16.04 cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*
canonical ubuntu_linux 18.04 cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
canonical ubuntu_linux 19.04 cpe:2.3:o:canonical:ubuntu_linux:19.04:*:*:*:*:*:*:*
canonical ubuntu_linux 19.10 cpe:2.3:o:canonical:ubuntu_linux:19.10:*:*:*:*:*:*:*
fedoraproject fedora 31 cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*
opensuse leap 15.1 cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*
oracle openjdk 8 cpe:2.3:a:oracle:openjdk:8:update231:*:*:*:*:*:*

References for CVE-2019-13117

URL Tags
http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00062.html Mailing List Third Party Advisory
http://www.openwall.com/lists/oss-security/2019/11/17/2 Mailing List Third Party Advisory
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=14471 Issue Tracking Mailing List Third Party Advisory
https://gitlab.gnome.org/GNOME/libxslt/commit/c5eb6cf3aba0af048596106ed839b4ae17ecbcb1 Patch Third Party Advisory
https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E
https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E
https://lists.debian.org/debian-lts-announce/2019/07/msg00020.html Mailing List Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IOYJKXPQCUNBMMQJWYXOR6QRUJZHEDRZ/
https://oss-fuzz.com/testcase-detail/5631739747106816 Permissions Required
https://security.netapp.com/advisory/ntap-20190806-0004/ Third Party Advisory
https://security.netapp.com/advisory/ntap-20200122-0003/ Third Party Advisory
https://usn.ubuntu.com/4164-1/ Third Party Advisory
https://www.oracle.com/security-alerts/cpujan2020.html Third Party Advisory
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