Use of cryptographically weak PRNG in the password recovery token generation of Revive…
Priority LOW 38CWE-338Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- High
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA.
Summary
Use of cryptographically weak PRNG in the password recovery token generation of Revive Adserver < v4.2.1 causes a potential authentication bypass attack if an attacker exploits the password recovery functionality. In lib/OA/Dal/PasswordRecovery.php, the function generateRecoveryId() generates a password reset token that relies on the PHP uniqid function and consequently depends only on the current server time, which is often visible in an HTTP Date header.
Why it matters now
EPSS 0.01579 75th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Revive | Revive Adserver | Fixed in 4.2.1 | — | No fix listed | CNA |
- Revive Adserver VendorRevive Affected Fixed in 4.2.1 Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:revive-adserver:revive_adserver:*:*:*:*:*:*:*:* | before 4.2.1 | Vulnerable | Revive Adserver |
- cpe:2.3:a:revive-adserver:revive_adserver:*:*:*:*:*:*:*:* Versions before 4.2.1 Vulnerable ·Revive Adserver
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2019-5440
- 2026-10-03 Alias added: GHSA-38m3-mrrg-hx5g
References
Exploit 1
More Revive vulnerabilities
- TI-2025-31114 Improper access control in Revive Adserver CVSS 3.0HIGH 8.8
- TI-2025-34810 Cross-site scripting in Revive Adserver CVSS 3.0MEDIUM 6.5
- TI-2022-04278 Revive Old Posts – Social Media Auto Post and Scheduling Plugin < 9.0.11 - PHP Object Injection CVSS 3.1HIGH 7.2
- TI-2023-11756 The login page of Revive Adserver v5.4.1 is vulnerable to brute force attacks. CVSS 3.1HIGH 7.5
- TI-2025-34812 Uncontrolled resource consumption in Revive Adserver CVSS 3.0MEDIUM 6.5
- TI-2025-32749 Missing authorization in Revive Adserver CVSS 3.1MEDIUM 6.5
Sources
- CVE-2019-5440 · CVE Program
- CVE-2019-5440 · NVD
- FIRST EPSS
- GHSA-38m3-mrrg-hx5g · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences