CVE-2026-104356

PictShare before version 3.7.1 contains a weak randomness vulnerability where the getRandomString() function uses the non-cryptographic rand() PRNG to generate the delete_code authorization token in src/inc/core.php. Attackers can predict or infer the PRNG state to guess valid delete_code values and perform unauthorized deletion of hosted files without needing to read the code from the info endpoint.

CVSS v3 5.9 MEDIUM

5.9^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.2 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/HaschekSolutions/pictshare/commit/ce5fc474e89769efeae25fee763894bcce3412e3
https://github.com/HaschekSolutions/pictshare/releases/tag/v3.7.1
https://www.vulncheck.com/advisories/pictshare-predictable-delete-code-via-rand

Configurations

No configuration.

History

01 Oct 2026, 22:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-01 22:17

Updated : 2026-10-02 19:16

NVD link : CVE-2026-104356

Mitre link : CVE-2026-104356

CVE.ORG link : CVE-2026-104356

JSON object : View

Products Affected

No product.

CWE

CWE-338

Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)

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