CVE-2026-15539

Exploitation

Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.

SSVC decision

• ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.40% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 32.5% of scored records. A rank, not a probability.

NVD base score

2.0 (CVSS v4.0), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/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

NVD analysis status

Deferred. NVD last modified this record on 2026-07-13.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2026-07-13 06:15Z1 MO AGO

Last updated

2026-07-13 14:48Z1 MO AGO

Reserved

2026-07-12

Assigning CNA

VulDB

Record state

PUBLISHED

Severity

Medium (CVSS 5.1)

CNA CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P

Weaknesses

• CWE-284Improper Access ControlPillar
• CWE-434Unrestricted Upload of File with Dangerous TypeBase

Data version

5.2

Document digest

2007f6a0af52a6ec2be855494072f038f91c47f4224d4caffa62f9977111002a

• vuldb.comVDB-377889 | SourceCodester Online Book Store System Book Image Upload Feature index.php books unrestricted uploadhttps://vuldb.com/vuln/377889vdb-entry
• vuldb.comVDB-377889 | CTI Indicators (IOB, IOC, TTP, IOA)https://vuldb.com/vuln/377889/ctisignaturepermissions-required
• vuldb.comCVE-2026-15539 | CVE Analysis and Reporthttps://vuldb.com/cve/CVE-2026-15539third-party-advisory
• vuldb.comSubmit #855046 | SourceCodester Online Book Store System 1.0 Remote Code Executionhttps://vuldb.com/submit/855046third-party-advisory
• medium.comhttps://medium.com/@hemantrajbhati5555/critical-authenticated-remote-code-execution-rce-via-unrestricted-file-upload-5a4a313ea1f1broken-linkexploit
• www.sourcecodester.comhttps://www.sourcecodester.com/product