🛡️ CVE-2021-43113 — itext7-core

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity high, availability high.

CVSS metrics in full

The score comes from this vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

• Attack vector: Network — reachable from anywhere that can route to the service.
• Attack complexity: Low — the attack works reliably, with no preparation.
• Privileges required: None — an unauthenticated stranger can try it.
• User interaction: None — nobody has to be tricked into anything.
• Scope: Unchanged — the damage stays inside the vulnerable component.
• Confidentiality impact: High — total loss, or loss the attacker controls.
• Integrity impact: High — total loss, or loss the attacker controls.
• Availability impact: High — total loss, or loss the attacker controls.

Weakness class

CVE-2021-43113 is classified as CWE-77: Command Injection. User input is placed into a command that the system interprets, allowing extra commands to be appended to the intended one.

Affected software

CVE-2021-43113 is recorded against 2 packages.

• com.itextpdf:itext7-core (fixed in 7.1.17)
• com.itextpdf:itextpdf (fixed in 5.5.13.3)

Timeline and source

Published on 16 December 2021 and last revised on 8 November 2023. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

nvd.nist.gov (Advisory)
github.com (Package)
github.com (Web)
github.com (Web)
lists.debian.org (Web)
pastebin.com (Web)
www.debian.org (Web)

Other advisories for this package

com.itextpdf:itext7-core has other advisories on record. If you are patching this one, these are worth checking on the same host:

• CVE-2022-24198 (published 2 Feb 2022)
• CVE-2022-24197 (published 2 Feb 2022)
• CVE-2022-24196 (published 2 Feb 2022)

Same weakness in other software

These advisories are the same class of weakness (CWE-77: Command Injection) in other software:

• CVE-2025-29296 (9.8 Critical, published 4 Aug 2026)
• CVE-2024-58354 (9.9 Critical, published 23 Jul 2026)
• CVE-2014-6633 (8.0 High, published 9 Jul 2026)
• CVE-2025-4032 (2.0 Low, published 7 Jul 2026)
• CVE-2023-39523 (6.8 Medium, published 7 Jul 2026)
• CVE-2022-42906 (8.0 High, published 7 Jul 2026)
• CVE-2024-4078 (9.8 Critical, published 7 Jul 2026)
• CVE-2024-0817 (8.0 High, published 7 Jul 2026)

CVE-2021-43113 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Details

Affected Packages

References