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SeaCMS CVE-2026-82599

| EUVDEUVD-2026-68302 LOW
Path Traversal (CWE-22)
2026-08-31 VulDB GHSA-6566-g7xh-w7qg
PHP Path Traversal Seacms N A
2.1
CVSS 4.0 · Vendor: VulDB

Severity by source

Vendor (VulDB) PRIMARY
2.1 MEDIUM
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
vuln.today AI
5.4 MEDIUM

Requires a valid low-privilege account (PR:L); file deletion yields low integrity and availability impact with no confidentiality exposure (C:N), and scope is unchanged.

3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
4.0 AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N

Primary rating from Vendor (VulDB).

CVSS VectorVendor: VulDB

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
X

Lifecycle Timeline

4
CVE Published
Aug 31, 2026 - 10:50 cve.org
LOW 2.1
Analysis Generated
Aug 31, 2026 - 01:28 vuln.today
Severity Changed
Aug 31, 2026 - 01:22 NVD
MEDIUM LOW
CVSS changed
Aug 31, 2026 - 01:22 NVD
5.3 (MEDIUM) 2.1 (LOW)

DescriptionCVE.org

A vulnerability was identified in SeaCMS up to 13.6. Affected by this vulnerability is the function unlink of the file /member.php?action=chgpwdsubmit of the component Avatar Upload. Such manipulation of the argument oldpic leads to path traversal. It is possible to launch the attack remotely. The exploit is publicly available and might be used.

AnalysisAI

Arbitrary file deletion in SeaCMS up to version 13.6 is achievable by authenticated remote users through the Avatar Upload component's password-change handler, where the oldpic parameter is passed unsanitized to PHP's unlink() function. A publicly available proof-of-concept exploit hosted on GitHub demonstrates the technique against the /member.php?action=chgpwdsubmit endpoint, lowering the barrier for exploitation to any account holder. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

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Vulnerability AssessmentAI

Exploitation Exploitation requires a valid low-privilege user account on the target SeaCMS installation (CVSS PR:L confirmed). … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 4.0 base vector (AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L, score 2.1) scores low due to the combination of limited impact (no confidentiality exposure, only low-rated integrity and availability) and the PR:L authentication barrier. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation No vendor-released patch has been identified at time of analysis; monitor VulDB (https://vuldb.com/vuln/397101) and the SeaCMS project repository for an official fix. … Detailed patch versions, workarounds, and compensating controls in full report.
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CVE-2026-82599 vulnerability details – vuln.today
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