SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2018-1311

The Apache Xerces-C 3.0.0 to 3.2.3 XML parser contains a use-after-free error triggered during the scanning of external DTDs.

HIGH 8.1EPSS 9.50%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (9.50%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

The Apache Xerces-C 3.0.0 to 3.2.3 XML parser contains a use-after-free error triggered during the scanning of external DTDs. This flaw has not been addressed in the maintained version of the library and has no current mitigation other than to disable DTD processing. This can be accomplished via the DOM using a standard parser feature, or via SAX using the XERCES_DISABLE_DTD environment variable.

CVSS 3.1
8.1 HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
9.50% probability · 95th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-416
Affected
apache/xerces-c\+\+ · redhat/enterprise linux desktop · redhat/enterprise linux eus · redhat/enterprise linux server · redhat/enterprise linux server aus · redhat/enterprise linux server tus · redhat/enterprise linux workstation · debian/debian linux · oracle/goldengate · fedoraproject/fedora
Source
security@apache.org
EPSS trend
0%5%10%27 October 2026: 9.50%27 October 202627 October 2026

EPSS 9.5% since 27 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

References

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.