CVE-2026-82560: CWE-835 Loop with Unreachable Exit Condition ('Infinite Loop')
CVE-2026-82560 is a vulnerability in Pod::Text for Perl versions before 6.1.1. It involves an infinite loop triggered by formatting a POD document with deeply nested =over directives that cause the margin to reach zero width. This results in CPU and memory exhaustion as the formatting process never terminates and output grows uncontrollably.
AI Analysis
Technical Summary
Pod::Text versions prior to 6.1.1 contain a loop with an unreachable exit condition due to how nested =over directives increase the margin indent. The wrap() function subtracts this margin from the output width to determine available text space. When the space reaches zero, the line-splitting substitution matches an empty string, causing the loop to append margin padding repeatedly without consuming input. This infinite loop leads to unbounded CPU and memory consumption when processing attacker-supplied POD documents.
Potential Impact
An attacker can supply a specially crafted POD document that triggers an infinite loop during formatting, causing the affected system to consume excessive CPU and memory resources. This can lead to denial of service due to resource exhaustion.
Mitigation Recommendations
A fix is available in Pod::Text version 6.1.1. Users should upgrade to version 6.1.1 or later to resolve this vulnerability. No other mitigation guidance is provided.
CVE-2026-82560: CWE-835 Loop with Unreachable Exit Condition ('Infinite Loop')
Description
CVE-2026-82560 is a vulnerability in Pod::Text for Perl versions before 6.1.1. It involves an infinite loop triggered by formatting a POD document with deeply nested =over directives that cause the margin to reach zero width. This results in CPU and memory exhaustion as the formatting process never terminates and output grows uncontrollably.
Affected software
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
Pod::Text versions prior to 6.1.1 contain a loop with an unreachable exit condition due to how nested =over directives increase the margin indent. The wrap() function subtracts this margin from the output width to determine available text space. When the space reaches zero, the line-splitting substitution matches an empty string, causing the loop to append margin padding repeatedly without consuming input. This infinite loop leads to unbounded CPU and memory consumption when processing attacker-supplied POD documents.
Potential Impact
An attacker can supply a specially crafted POD document that triggers an infinite loop during formatting, causing the affected system to consume excessive CPU and memory resources. This can lead to denial of service due to resource exhaustion.
Mitigation Recommendations
A fix is available in Pod::Text version 6.1.1. Users should upgrade to version 6.1.1 or later to resolve this vulnerability. No other mitigation guidance is provided.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- CPANSec
- Date Reserved
- 2026-08-29T22:38:15.085Z
- State
- PUBLISHED
Threat ID: 6aaea79555bf5e2cf5afb36b
Added to database: 09/19/2026, 15:17:41 UTC
Last enriched: 09/19/2026, 15:31:30 UTC
Last updated: 09/19/2026, 18:17:11 UTC
Views: 9
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