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Back to active CVEs
High · CVSS 7.1CVE-2026-71490

OPNsense: Direct comma-separated user privileges bypass OPNsense MVC read-only write protectionCVE-2026-71490

Answer in brief

CVE-2026-71490 records a High severity (CVSS 7.1) vulnerability in OPNsense: Direct comma-separated user privileges bypass OPNsense MVC read-only write protection. The current sources do not mark it as known exploited. The current feed maps opnsense/core (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Oct 15, 2026Updated Oct 15, 2026Source checked Oct 15, 2026First seen by HOL Oct 15, 2026Material review Oct 15, 2026
Upstream Advisory

Key facts

Risk
High · CVSS 7.1
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Available

Why this deserves its current priority

CVSS is 7.1. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps opnsense/core (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
opnsense/coregeneric<26.1.1126.1.11

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for opnsense/core.
  2. 2Review the reported fix. Update opnsense/core to 26.1.11 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Oct 15, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Oct 15, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Oct 15, 2026

Sources and claim methodology

  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
Upstream source description

OPNsense is a FreeBSD based firewall and routing platform. Prior to 26.1.11, OPNsense\Core\ACL::hasPrivilege() appends a directly assigned comma-separated <priv> value as one string and then uses an exact comparison when checking user-config-readonly. A user directly assigned both a component write privilege and user-config-readonly can therefore be treated as lacking the read-only restriction, and MVC APIs protected by throwReadOnly() can persist configuration changes for that component. Group privileges are not affected by the same parser flaw because the group path already splits comma-separated values. This issue is fixed in version 26.1.11.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • Discourse ActivityPub: Fix inbound actor validation and apply outbound request SSRF hardeningAlso CWE-863
  • kin-openapi: Unauthenticated panic (DoS) in openapi3filter legacy router via non-canonical/unsupported HTTP method on a static pathSame generic ecosystem
  • kin-openapi spec loader panics on a self-referential additionalProperties $ref (nil-pointer DoS)Same generic ecosystem
  • kin-openapi openapi3filter: nil-pointer panic in ValidateResponse on a response header declared with contentSame generic ecosystem
  • kin-openapi deepObject query decoding repeatedly compiles an invariant regular expressionSame generic ecosystem
  • kin-openapi: ValidationHandler security-requirement bypass via encoded-path operation confusionSame generic ecosystem

Record context

Vulnerability class
Vulnerability
EPSS
Not reported
CWE IDs
CWE-863
Source
CVE List V5
Source checked
Oct 15, 2026
References
4 linked sources
Open source record