CVE Explorer

CVE-2026-25923

my little forum is a PHP and MySQL based internet forum that displays the messages in classical threaded view. Prior to 20260208.1, the application fails to filter the phar:// protocol in URL validation, allowing attackers to upload a malicious Phar Polyglot file (disguised as JPEG) via the image upload feature, trigger Phar deserialization through BBCode [img] tag processing, and exploit Smarty 4.1.0 POP chain to achieve arbitrary file deletion. This vulnerability is fixed in 20260208.1.

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:fc7c78ea3a094722ec50f1ba5ac38d78f26f96ae9f56eabef1dd519494a4c312

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 2 assertions

{"cweId":"CWE-434","description":"CWE-434: Unrestricted Upload of File with Dangerous Type","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:f6670974ceab74a7f2006ea33760c8754f6c0c8df3f011c5c20c026a0b4cc6b7 · sha256:230f43aec0d9f1ee… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-502","description":"CWE-502: Deserialization of Untrusted Data","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:f6670974ceab74a7f2006ea33760c8754f6c0c8df3f011c5c20c026a0b4cc6b7 · sha256:230f43aec0d9f1ee… · /containers/cna/problemTypes/1/descriptions/0

Affected products and versions

1 source assertion

{"product":"mylittleforum","vendor":"My-Little-Forum","versions":[{"status":"affected","version":"< 20260208.1"}]}

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:f6670974ceab74a7f2006ea33760c8754f6c0c8df3f011c5c20c026a0b4cc6b7 · sha256:230f43aec0d9f1ee… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion

{"metric":{"attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":8.7,"baseSeverity":"HIGH","privilegesRequired":"NONE","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE"},"metric_type":"cvssV4_0"}

cve_program_cvelist_v5cvss
urn:baitaphish:normalized-source-record:v2:f6670974ceab74a7f2006ea33760c8754f6c0c8df3f011c5c20c026a0b4cc6b7 · sha256:230f43aec0d9f1ee… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

2 source assertions

{"cweId":"CWE-434","description":"CWE-434: Unrestricted Upload of File with Dangerous Type","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:f6670974ceab74a7f2006ea33760c8754f6c0c8df3f011c5c20c026a0b4cc6b7 · sha256:230f43aec0d9f1ee… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-502","description":"CWE-502: Deserialization of Untrusted Data","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:f6670974ceab74a7f2006ea33760c8754f6c0c8df3f011c5c20c026a0b4cc6b7 · sha256:230f43aec0d9f1ee… · /containers/cna/problemTypes/1/descriptions/0

Source references

2 source assertions

{"name":"https://github.com/My-Little-Forum/mylittleforum/releases/tag/20260208.1","tags":["x_refsource_MISC"],"url":"https://github.com/My-Little-Forum/mylittleforum/releases/tag/20260208.1"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:f6670974ceab74a7f2006ea33760c8754f6c0c8df3f011c5c20c026a0b4cc6b7 · sha256:230f43aec0d9f1ee… · /containers/cna/references/1

{"name":"https://github.com/My-Little-Forum/mylittleforum/security/advisories/GHSA-wr9p-3c3g-78fw","tags":["x_refsource_CONFIRM"],"url":"https://github.com/My-Little-Forum/mylittleforum/security/advisories/GHSA-wr9p-3c3g-78fw"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:f6670974ceab74a7f2006ea33760c8754f6c0c8df3f011c5c20c026a0b4cc6b7 · sha256:230f43aec0d9f1ee… · /containers/cna/references/0

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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