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CVE-2019-5815· NVD / CVE Program· CNA Chrome

Type confusion in xsltNumberFormatGetMultipleLevel prior to libxslt 1.1.33 could allow attackers to potentially exploit heap corruption via

Noroxi assessment

Priority: Monitor (action score 31/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 1.8% (FIRST EPSS); higher than 78.5% of all records.
  • Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: chromium (Debian:10) 76.0.3809.100-1~deb10u1; libxslt (Debian:10) 1.1.32-2.2~deb10u2; chromium (Debian:12) 74.0.3729.108-1.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to chromium (Debian:10) 76.0.3809.100-1~deb10u1; libxslt (Debian:10) 1.1.32-2.2~deb10u2; chromium (Debian:12) 74.0.3729.108-1 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

Type confusion in xsltNumberFormatGetMultipleLevel prior to libxslt 1.1.33 could allow attackers to potentially exploit heap corruption via crafted XML data.

HighCVSS 7.5 · v3.1—No exploit Fix available
Published
Dec 10, 2019
Updated
Jun 16, 2026
EPSS
1.8% · 78th percentile

Report tools

JSON

Action score

31

Monitor

Low priority for now.

CVSS
30 / 40 · 7.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
1 / 30 · 1.8%

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2019-5815

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
xmlsoftlibxslt
debiandebian linux

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • debian debian linux10.0
  • xmlsoft libxsltbefore 1.1.33

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Chrome). Independent of NVD's CPE analysis and usually ahead of it.

  • Google Chrome

    • unspecified and later · before 74.0.3729.108affected

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:10chromiumbefore 76.0.3809.100-1~deb10u176.0.3809.100-1~deb10u1
Debian:10libxsltbefore 1.1.32-2.2~deb10u21.1.32-2.2~deb10u2
Debian:12chromiumbefore 74.0.3729.108-174.0.3729.108-1
Debian:12libxsltbefore 1.1.34-21.1.34-2
openSUSE:Leap 15.0chromiumbefore 74.0.3729.108-lp150.209.274.0.3729.108-lp150.209.2
Red Hat:rhel_extras:6chromium-browserbefore 0:74.0.3729.108-1.el6_100:74.0.3729.108-1.el6_10
Red Hat:rhel_extras:6chromium-browser-debuginfobefore 0:74.0.3729.108-1.el6_100:74.0.3729.108-1.el6_10
RubyGemsnokogiribefore 1.10.51.10.5
SUSE:Package Hub 15chromiumbefore 74.0.3729.108-bp150.207.174.0.3729.108-bp150.207.1

Same product

xmlsoft: all records

Other highest-scoring records for the same primary product.

  • CVE-2019-11068libxslt through 1.1.33 allows bypass of a protection mechanism because callers of xsltCheckRead and xsltCheckWrite permit access even upon r
    41Plan
  • CVE-2008-2935Multiple heap-based buffer overflows in the rc4 (1) encryption (aka exsltCryptoRc4EncryptFunction) and (2) decryption (aka exsltCryptoRc4Dec
    34Monitor
  • CVE-2025-24855numbers.c in libxslt before 1.1.43 has a use-after-free because, in nested XPath evaluations, an XPath context node can be modified but neve
    31Monitor

Published before and after this one in the same product

  • ← EarlierCVE-2019-13118Jun 30, 2019 · In numbers.c in libxslt 1.1.33, a type holding grouping characters of an xsl:number instruction was too narrow and an invalid character/leng
    23Monitor
  • ← EarlierCVE-2019-18197Oct 18, 2019 · In xsltCopyText in transform.c in libxslt 1.1.33, a pointer variable isn't reset under certain circumstances.
    31Monitor
  • Later →CVE-2024-55549Mar 13, 2025 · xsltGetInheritedNsList in libxslt before 1.1.43 has a use-after-free issue related to exclusion of result prefixes.
    31Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
debian:chromium74.0.3729.108-1 · Debian:12Package registry (OSV)
debian:libxslt1.1.34-2 · Debian:12Package registry (OSV)
opensuse:chromium74.0.3729.108-lp150.209.2 · openSUSE:Leap 15.0Package registry (OSV)
red hat:chromium-browser0:74.0.3729.108-1.el6_10 · Red Hat:rhel_extras:6Package registry (OSV)
red hat:chromium-browser-debuginfo0:74.0.3729.108-1.el6_10 · Red Hat:rhel_extras:6Package registry (OSV)
RubyGems:nokogiri1.10.5Package registry (OSV)
suse:chromium74.0.3729.108-bp150.207.1 · SUSE:Package Hub 15Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

All national notices →

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
none
Availability
high · the service can be disrupted
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
None
Availability impact
High

Weakness class (CWE)

CWE-787 · Out-of-bounds Write

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (2 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records