Out-of-bounds Write in iText

published 2022-02-01 4 y ago modified 2026-06-17 4 mo ago also GHSA-c32g-2mgr-cfq7 , EUVD-2022-0948

cvss: 6.5; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 1.3%; EPSS 1.3% chance of exploitation in 30 days, percentile 70%
public exploits: 0; none known

iText v7.1.17 was discovered to contain a stack-based buffer overflow via the component ByteBuffer.append, which allows attackers to cause a Denial of Service (DoS) via a crafted PDF file.

Patch / fix

fixed in 2 links 2

maven com.itextpdf:itext7-core 7.1.18
itextpdf itext 7.2.2

github.com/itext/itext7#78 pull request
github.com/itext/itext7/releases/tag/7.1.18 release

Exploit prediction

1.29% chance of exploitation in the next 30 days, higher than 70% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

github.com https://github.com/itext/itext7/pull/78#issuecomment-1089282165 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
NVD	3.1	6.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
NVD	2.0	4.3	AV:N/AC:M/Au:N/C:N/I:N/A:P
GitHub	3.1	6.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Affected packages

ecosystem	package	affected	fixed in
maven	com.itextpdf:itext7-core	<7.1.18	7.1.18

Classification

Weakness

CWE-787 Out-of-bounds Write

References

github.com /itext/itext7/pull/78
web, third-party-advisory
github.com /itext/itext7/pull/78#issuecomment-1089282165
web, exploit, issue-tracking, third-party-advisory
github.com /itext/itext7/releases/tag/7.1.18
web
nvd.nist.gov /vuln/detail/CVE-2022-24197
advisory
github.com /itext/itext7
package

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.

Summary