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CVE-2026-27760

OpenCATS prior to commit 3002a29 contains a PHP code injection vulnerability in the installer AJAX endpoint that allows unauthenticated attackers to execute arbitrary code by injecting PHP statements into the databaseConnectivity action parameter. Attackers can break out of the define() string context in config.php using a single quote and statement separator to inject malicious PHP code that persists and executes on every subsequent page load when the installation wizard remains incomplete.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:7a8b66659c7c687688c16d25a0067efb64842f84bd437cde1e63e4d0e23818a2
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cvss · 2 assertions

{"metric":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"HIGH","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":9.2,"baseSeverity":"CRITICAL","exploitMaturity":"NOT_DEFINED","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpa…

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:2fd310367b038f394a16a71fd47d378d317ac4ecc6404ee408645e3d75f96fd0 · sha256:3367fa5b4c29bfb6… · /containers/cna/metrics/0/cvssV4_0

{"metric":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":8.1,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:2fd310367b038f394a16a71fd47d378d317ac4ecc6404ee408645e3d75f96fd0 · sha256:3367fa5b4c29bfb6… · /containers/cna/metrics/1/cvssV3_1

Affected products and versions

1 source assertion
{"defaultStatus":"unaffected","packageURL":"pkg:github/opencats/OpenCATS","product":"OpenCATS","repo":"https://github.com/opencats/OpenCATS","vendor":"opencats","versions":[{"lessThanOrEqual":"0.9.7.4","status":"affected","version":"0","versionType":"custom"},{"status":"unaffected","version":"3002a29f4c3cada1aa2c4f3d4ae4e189906606b6","versionType":"git"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:2fd310367b038f394a16a71fd47d378d317ac4ecc6404ee408645e3d75f96fd0 · sha256:3367fa5b4c29bfb6… · /containers/cna/affected/0

Provider-owned CVSS observations

2 source assertions
{"metric":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"HIGH","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":9.2,"baseSeverity":"CRITICAL","exploitMaturity":"NOT_DEFINED","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpa…
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:2fd310367b038f394a16a71fd47d378d317ac4ecc6404ee408645e3d75f96fd0 · sha256:3367fa5b4c29bfb6… · /containers/cna/metrics/0/cvssV4_0
{"metric":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":8.1,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:2fd310367b038f394a16a71fd47d378d317ac4ecc6404ee408645e3d75f96fd0 · sha256:3367fa5b4c29bfb6… · /containers/cna/metrics/1/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-94","description":"CWE-94 Improper Control of Generation of Code ('Code Injection')","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:2fd310367b038f394a16a71fd47d378d317ac4ecc6404ee408645e3d75f96fd0 · sha256:3367fa5b4c29bfb6… · /containers/cna/problemTypes/0/descriptions/0

Source references

6 source assertions
{"tags":["technical-description","exploit"],"url":"https://chocapikk.com/posts/2026/opencats-installer-rce/"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:2fd310367b038f394a16a71fd47d378d317ac4ecc6404ee408645e3d75f96fd0 · sha256:3367fa5b4c29bfb6… · /containers/cna/references/0
{"tags":["related"],"url":"https://github.com/opencats/OpenCATS/blob/46e4727/lib/CATSUtility.php#L142-L172"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:2fd310367b038f394a16a71fd47d378d317ac4ecc6404ee408645e3d75f96fd0 · sha256:3367fa5b4c29bfb6… · /containers/cna/references/3
{"tags":["related"],"url":"https://github.com/opencats/OpenCATS/blob/46e4727/modules/install/ajax/ui.php#L130"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:2fd310367b038f394a16a71fd47d378d317ac4ecc6404ee408645e3d75f96fd0 · sha256:3367fa5b4c29bfb6… · /containers/cna/references/4
{"tags":["patch"],"url":"https://github.com/opencats/OpenCATS/commit/3002a29f4c3cada1aa2c4f3d4ae4e189906606b6"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:2fd310367b038f394a16a71fd47d378d317ac4ecc6404ee408645e3d75f96fd0 · sha256:3367fa5b4c29bfb6… · /containers/cna/references/2
{"tags":["issue-tracking"],"url":"https://github.com/opencats/OpenCATS/pull/706"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:2fd310367b038f394a16a71fd47d378d317ac4ecc6404ee408645e3d75f96fd0 · sha256:3367fa5b4c29bfb6… · /containers/cna/references/1
{"tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/opencats-php-code-injection-via-installer-ajax-endpoint"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:2fd310367b038f394a16a71fd47d378d317ac4ecc6404ee408645e3d75f96fd0 · sha256:3367fa5b4c29bfb6… · /containers/cna/references/5

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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