CVE-2021-22948

HIGH
Published Sep 23, 20214y ago · Modified Jun 17, 20262w ago
7.1 CVSS 3.1
High
Find Similar
Published Sep 23, 2021 4y ago
Last Modified Jun 17, 2026 2w ago

Description

Vulnerability in the generation of session IDs in revive-adserver < 5.3.0, based on the cryptographically insecure uniqid() PHP function. Under some circumstances, an attacker could theoretically be able to brute force session IDs in order to take over a specific account.

CVSS Details

Base Score
7.1
Exploitability
2.8
Impact
4.2
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction Required
Scope Unchanged
Confidentiality High
Integrity Low
Availability None

Threat Intelligence

No active exploitation signals — not in CISA KEV and no EPSS score yet.

Exploit & Patch Status
Public Exploit Known
Patch Available

Weaknesses 2

CWE-338
CWE-79 Cross-site Scripting Injection

Affected Products 2

VendorProductVersionRange
revive-adserverrevive_adserver* <5.3.0
revive-adserverrevive_adserver5.3.0any

References 2

  • hackerone.com https://hackerone.com/reports/1187820
    ExploitThird Party Advisory
  • revive-adserver.com https://www.revive-adserver.com/security/revive-sa-2021-005/
    PatchVendor Advisory

Remediation

  • revive-adserver.com https://www.revive-adserver.com/security/revive-sa-2021-005/
    PatchVendor Advisory