CVE-2026-115824 Miyagawa CVE debrief

Who should care

Defenders responsible for systems using Starman for Perl should assess exposure and prioritize patching or mitigation, as this vulnerability can lead to memory exhaustion and potential denial-of-service conditions.

Why it matters

CVE-2026-115824 is a high-severity vulnerability in Starman versions before 0.4019 for Perl, allowing memory exhaustion via unbounded buffering of chunked request bodies. Defenders should prioritize patching or mitigating this vulnerability, especially for systems using Starman for Perl.

• Memory exhaustion and potential denial-of-service conditions
• Possible system crashes or freezes
• Increased risk of exploitation by remote attackers

Technical summary

The chunked body decoder in Starman versions before 0.4019 for Perl keeps each chunk in memory until the whole chunk and its CRLF have arrived, and sets no limit on the length of a chunk-size line. A client that declares a huge chunk size and streams data, or sends a chunk-size line that never ends, grows the buffer for as long as it keeps sending. This can lead to memory exhaustion and potential denial-of-service conditions, emphasizing the need for defenders to assess exposure and prioritize patching or mitigation.

Defensive priority

Defenders should prioritize patching or mitigating this vulnerability, especially for systems using Starman for Perl, as it can lead to memory exhaustion and potential denial-of-service conditions.

Recommended defensive actions

• Patch Starman to version 0.4019 or later
• Implement input validation and chunk size limits for chunked request bodies
• Monitor systems using Starman for Perl for potential memory exhaustion and denial-of-service conditions
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The CVE record and NVD detail page provide information on the vulnerability, including its description, CVSS score, and references to patches and changelogs. The vulnerability affects Starman versions before 0.4019 for Perl, and defenders should verify the affected scope and severity. The official CVE Program record and NIST NVD detail page offer source-provided CVE metadata and source-specific vulnerability assessments. However, the exact scope of affected systems and the full impact of the vulnerability are not detailed, requiring a

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.