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PatchSiren cyber security CVE debrief

CVE-2026-116275 AllenAI CVE debrief

A vulnerability was found in AllenAI AllenNLP up to 2.10.1, impacting the Registrable Configuration Machinery in the registrable.py file. The issue allows for code injection through manipulation of the Type argument in the Registrable.resolve_class_name function. This vulnerability can be exploited remotely and has been made public. The affected products are no longer supported by the maintainer.

Vendor
AllenAI
Product
AllenNLP
CVSS
MEDIUM 5.3
CISA KEV
Not listed in stored evidence
Original CVE published
2026-10-26
Original CVE updated
2026-10-26
Advisory published
2026-10-26
Advisory updated
2026-10-26

Who should care

Defenders responsible for systems using AllenNLP, especially those using versions 2.10.0 and 2.10.1, should assess exposure and prioritize verification and potential remediation. This includes operators, platform administrators, vulnerability management teams, and security teams who need to review the affected scope, severity, and vendor guidance to validate exposure and plan for remediation.

Why it matters

CVE-2026-116275 is a code injection vulnerability in AllenNLP's Registrable Configuration Machinery. Defenders should verify exposure, especially for unsupported versions 2.10.0 and 2.10.1, and prioritize remediation.

  • Remote exploitation of this vulnerability could lead to code injection
  • Affected products are no longer supported by the maintainer
  • Verification of exposure is necessary for systems using AllenNLP versions 2.10.0 and 2.10.1
  • Remediation may involve upgrading or replacing affected components

Technical summary

The vulnerability is in the Registrable Configuration Machinery of AllenNLP, specifically in the registrable.py file. The Registrable.resolve_class_name function is impacted by a code injection vulnerability due to improper handling of the Type argument. This vulnerability can be exploited remotely and affects products no longer supported by the maintainer. Defenders should prioritize verifying exposure in their inventory, especially for systems using AllenNLP versions 2.10.0 and 2.10.1, and assess the feasibility of upgrading or replacing the affected components.

Defensive priority

Defenders should prioritize verifying exposure in their inventory, especially for systems using AllenNLP versions 2.10.0 and 2.10.1, and assess the feasibility of upgrading or replacing the affected components.

Recommended defensive actions

  • Verify AllenNLP versions 2.10.0 and 2.10.1 are not in use
  • Assess the feasibility of upgrading or replacing affected components
  • Monitor for 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
  • Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The CVE record and source item provide details about the vulnerability in AllenNLP's Registrable Configuration Machinery. The issue is exploitable remotely and affects products no longer supported by the maintainer.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-116275 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-116275

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

  • CVE-2026-116275 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-116275

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

Supplemental references

  • AllenAI AllenNLP Registrable Configuration Machinery registrable.py Registrable.resolve_class_na

    Unverified legacy reference

    URL: https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/116xxx/CVE-2026-116275.json

    cve_program_cvelist_v5

  • Source reference

    Unverified legacy reference

    URL: https://vuldb.com/vuln/426304

    Supplemental source - vdb-entry, technical-description

  • Source reference

    Unverified legacy reference

    URL: https://vuldb.com/vuln/426304/cti

    Supplemental source - signature, permissions-required

  • Source reference

    Unverified legacy reference

    URL: https://vuldb.com/cve/CVE-2026-116275

    Supplemental source - third-party-advisory

  • Source reference

    Unverified legacy reference

    URL: https://vuldb.com/submit/1011308

    Supplemental source - third-party-advisory

  • Source reference

    Unverified legacy reference

    URL: https://github.com/3em0/cve_repo/blob/main/2026/AllenNLP_2.10.1_Unsafe_Reflective_Instantiation_RCE_in_FromParams_Configuration_Handling.md

    Supplemental source - exploit

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.