Is there a public PoC exploit available for CVE-2026-82603?

Yes, a public proof-of-concept exploit is available for CVE-2026-82603. Prioritise patching immediately. EPSS: 0.3%.

SeaCMS CVE-2026-82603

Q: What is the CVSS score of CVE-2026-82603?

CVE-2026-82603 has a CVSS 4.0 base score of 2.1 (Low). CVSS vector: 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. EPSS exploitation probability: 0.3%.

EUVD-2026-68312 LOW

Path Traversal (CWE-22)

2026-08-31 VulDB

GHSA-w79p-9336-45xf

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

Member account required (PR:L); file deletion yields low integrity and availability impact with no confidentiality exposure and no scope change.

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

Lifecycle Timeline

CVE Published

Aug 31, 2026 - 10:50 cve.org

LOW 2.1

Severity Changed

Aug 31, 2026 - 02:22 NVD

MEDIUM LOW

CVSS changed

Aug 31, 2026 - 02:22 NVD

5.3 (MEDIUM) 2.1 (LOW)

Analysis Generated

Aug 31, 2026 - 02:14 vuln.today

DescriptionCVE.org

A vulnerability was detected in SeaCMS up to 13.6. This issue affects some unknown processing of the file /member.php?action=del_pl of the component Comment Cache. The manipulation of the argument itype/vid results in path traversal. The attack may be launched remotely. The exploit is now public and may be used.

AnalysisAI

Path traversal in SeaCMS up to version 13.6 enables authenticated remote attackers to delete arbitrary files by injecting directory traversal sequences into the itype or vid parameters of the Comment Cache deletion endpoint /member.php?action=del_pl. A public proof-of-concept exploit is documented in a GitHub security advisory, lowering the barrier to exploitation. …

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Vulnerability AssessmentAI

Exploitation	Exploitation requires a valid member-level account on the target SeaCMS instance (PR:L per CVSS 4.0 vector), meaning member self-registration must be enabled or the attacker must have obtained credentials through other means. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment	The CVSS 4.0 vector (AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L) yields a score of 5.3 (Medium), reflecting network-accessible exploitation, low complexity, no confidentiality impact, and limited integrity and availability impact. … 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; operators should monitor official SeaCMS release channels for a fix. … Detailed patch versions, workarounds, and compensating controls in full report.