CVE-2021-27913

Use of a Broken or Risky Cryptographic Algorithm

LOW
3.5
CVSS Score
Published: August 30, 2021 at 03:55 PM UTC
Updated: June 17, 2026 at 03:45 AM UTC
1 product affected across 1 vendorMautic

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Severity
LOW3.5
Exploit prediction
EPSS 0.5%

Description

The function mt_rand is used to generate session tokens, this function is cryptographically flawed due to its nature being one pseudorandomness, an attacker can take advantage of the cryptographically insecure nature of this function to enumerate session tokens for accounts that are not under his/her control This issue affects: Mautic Mautic versions prior to 3.3.4; versions prior to 4.0.0.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

95%
Affected range stops below 3.3.4, so it looks safe — our inference, not a vendor statement
Affected range stops below 4.0.0, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (1)

CVSS

3.5LOWMautic
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
LOW
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-327CWE-338

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