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PatchSiren cyber security CVE debrief

CVE-2026-110263 OW2 CVE debrief

AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-10-14T14:16:34.949Z and has not been modified since then. The vulnerability affects OW2 ASM 3.0 before 9.11, allowing attackers to exhaust the stack via deeply nested generic type signatures in SignatureReader.parseType(). Defenders should assess exposure and prioritize verification and potential updates. The CVE details an uncontrolled recursion vulnerability that can lead to denial of service.

Vendor
OW2
Product
ASM
CVSS
MEDIUM 6.8
CISA KEV
Not listed in stored evidence
Original CVE published
2026-10-14
Original CVE updated
2026-10-14
Advisory published
2026-10-14
Advisory updated
2026-10-14

Who should care

Defenders responsible for systems using OW2 ASM 3.0 before 9.11 should assess exposure and prioritize verification and potential updates. This includes operators, platform administrators, vulnerability management teams, and security teams who need to verify exposure and assess the impact of potential denial-of-service attacks.

Why it matters

Defenders should prioritize verifying exposure in systems using OW2 ASM 3.0 before 9.11 and assessing the impact of potential denial-of-service attacks due to the uncontrolled recursion vulnerability.

  • Potential denial-of-service attacks via deeply nested generic type signatures
  • Verification of exposure in systems using OW2 ASM 3.0 before 9.11
  • Assessment of impact on system availability

Technical summary

OW2 ASM 3.0 before 9.11 contains an uncontrolled recursion vulnerability in SignatureReader.parseType() that allows attackers to exhaust the stack via deeply nested generic type signatures. This vulnerability can lead to denial of service. The affected product is OW2 ASM, and the vulnerability is triggered by a crafted class file with a long Signature attribute containing many nested type arguments. Defenders should prioritize verifying exposure in systems using OW2 ASM 3.0 before 9.11 and assessing the impact of potential denial-of-service attacks.

Defensive priority

Defenders should prioritize verifying exposure in systems using OW2 ASM 3.0 before 9.11 and assessing the impact of potential denial-of-service attacks.

Recommended defensive actions

  • Verify exposure in systems using OW2 ASM 3.0 before 9.11
  • Assess the impact of potential denial-of-service attacks
  • Update to OW2 ASM 9.11 or later if possible
  • Monitor for and respond to potential exploitation attempts
  • 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

Evidence notes

The CVE record and source item provide details on the uncontrolled recursion vulnerability in OW2 ASM 3.0 before 9.11. However, the corpus does not establish versions beyond 3.0 and 9.11 or provide specific examples of exploitation. Defenders should verify exposure in systems using OW2 ASM 3.0 before 9.11 and assess the impact of potential denial-of-service attacks. Evidence is limited, and further verification is required.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-110263 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-110263

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-110263 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-110263

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

  • OW2 ASM 3.0 before 9.11 Uncontrolled Recursion in SignatureReader

    Unverified legacy reference

    URL: https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/110xxx/CVE-2026-110263.json

    cve_program_cvelist_v5

  • Source reference

    Unverified legacy reference

    URL: https://gitlab.ow2.org/asm/asm/-/merge_requests/465

    Supplemental source - patch

  • Source reference

    Unverified legacy reference

    URL: https://gitlab.ow2.org/asm/asm/-/commit/8f87fc0317a4c5ee8f538bcbb641928def25dbd6

    Supplemental source - patch

  • Source reference

    Unverified legacy reference

    URL: https://gitlab.ow2.org/asm/asm/-/blob/ASM_9_10_1/asm/src/main/java/org/objectweb/asm/signature/SignatureReader.java

    Supplemental source - technical-description

  • Source reference

    Unverified legacy reference

    URL: https://asm.ow2.io/versions.html

    Supplemental source - release-notes

  • Source reference

    Unverified legacy reference

    URL: https://www.vulncheck.com/advisories/ow2-asm-3.0-before-9.11-uncontrolled-recursion-in-signaturereader

    Supplemental source - third-party-advisory

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.