CWE-338
Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)
The product uses a Pseudo-Random Number Generator (PRNG) in a security context, but the PRNG's algorithm is not cryptographically strong.
CVE-2025-40933 (GCVE-0-2025-40933)
Vulnerability from cvelistv5 – Published: 2025-09-17 14:25 – Updated: 2025-09-17 17:21
VLAI
Title
Apache::AuthAny::Cookie v0.201 or earlier for Perl generates session ids insecurely
Summary
Apache::AuthAny::Cookie v0.201 or earlier for Perl generates session ids insecurely.
Session ids are generated using an MD5 hash of the epoch time and a call to the built-in rand function. The epoch time may be guessed, if it is not leaked from the HTTP Date header. The built-in rand function is unsuitable for cryptographic usage.
Predicable session ids could allow an attacker to gain access to systems.
Severity
7.5 (High)
CWE
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| KGOLDOV | Apache::AuthAny |
Affected:
0.19 , ≤ 0.201
(custom)
|
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CVE-2025-41731 (GCVE-0-2025-41731)
Vulnerability from cvelistv5 – Published: 2025-11-10 07:44 – Updated: 2025-11-10 15:20
VLAI
Title
Jumo: Insufficient entropy in PRNG may lead to root access
Summary
A vulnerability was identified in the password generation algorithm when accessing the debug-interface. An unauthenticated local attacker with knowledge of the password generation timeframe might be able to brute force the password in a timely manner and thus gain root access to the device if the debug interface is still enabled.
Severity
7.4 (High)
CWE
- CWE-338 - Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)
Assigner
References
1 reference
Impacted products
3 products
| Vendor | Product | Version | |
|---|---|---|---|
| Jumo | variTRON300 |
Affected:
0.0.0.0 , < 9.0.2.5
(semver)
|
|
| Jumo | variTRON500 |
Affected:
0.0.0.0 , < 9.0.2.5
(semver)
|
|
| Jumo | variTRON500 touch |
Affected:
0.0.0.0 , < 9.0.2.5
(semver)
|
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CVE-2025-46653 (GCVE-0-2025-46653)
Vulnerability from cvelistv5 – Published: 2025-04-26 00:00 – Updated: 2025-04-29 15:22
VLAI
Summary
Formidable (aka node-formidable) 2.1.0 through 3.x before 3.5.3 relies on hexoid to prevent guessing of filenames for untrusted executable content; however, hexoid is documented as not "cryptographically secure." (Also, there is a scenario in which only the last two characters of a hexoid string need to be guessed, but this is not often relevant.) NOTE: this does not imply that, in a typical use case, attackers will be able to exploit any hexoid behavior to upload and execute their own content.
Severity
CWE
- CWE-338 - Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| node-formidable | Formidable |
Affected:
2.1.0 , < 3.5.3
(semver)
|
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CVE-2025-54883 (GCVE-0-2025-54883)
Vulnerability from cvelistv5 – Published: 2025-08-05 23:36 – Updated: 2025-08-06 20:30
VLAI
Title
Vision UI's security-kit Contains Cryptographic Weakness
Summary
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Severity
CWE
- CWE-338 - Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/DavidOsipov/Vision-ui/security… | x_refsource_CONFIRM |
| https://github.com/DavidOsipov/Vision-ui/commit/3… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| DavidOsipov | Vision-ui |
Affected:
< 1.5.0
|
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CVE-2025-59390 (GCVE-0-2025-59390)
Vulnerability from cvelistv5 – Published: 2025-11-26 08:50 – Updated: 2025-12-11 14:24
VLAI
Title
Apache Druid: Kerberos authenticaton chooses a cryptographically unsecure secret if not configured explicitly.
Summary
Apache Druid’s Kerberos authenticator uses a weak fallback secret when the `druid.auth.authenticator.kerberos.cookieSignatureSecret` configuration is not explicitly set. In this case, the secret is generated using `ThreadLocalRandom`,
which is not a crypto-graphically secure random number generator. This
may allow an attacker to predict or brute force the secret used to sign
authentication cookies, potentially enabling token forgery or
authentication bypass. Additionally, each process generates its own
fallback secret, resulting in inconsistent secrets across nodes. This
causes authentication failures in distributed or multi-broker
deployments, effectively leading to a incorrectly configured clusters. Users are
advised to configure a strong `druid.auth.authenticator.kerberos.cookieSignatureSecret`
This issue affects Apache Druid: through 34.0.0.
Users are recommended to upgrade to version 35.0.0, which fixes the issue making it mandatory to set `druid.auth.authenticator.kerberos.cookieSignatureSecret` when using the Kerberos authenticator. Services will fail to come up if the secret is not set.
Severity
No CVSS data available.
CWE
- CWE-338 - Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://lists.apache.org/thread/jwjltllnntgj1sb9w… | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Apache Software Foundation | Apache Druid |
Affected:
0 , ≤ 34.0.0
(semver)
|
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CVE-2025-66565 (GCVE-0-2025-66565)
Vulnerability from cvelistv5 – Published: 2025-12-09 01:47 – Updated: 2025-12-09 16:03
VLAI
Title
Fiber Utils UUIDv4 and UUID Silent Fallback to Predictable Values
Summary
Fiber Utils is a collection of common functions created for Fiber. In versions 2.0.0-rc.3 and below, when the system's cryptographic random number generator (crypto/rand) fails, both functions silently fall back to returning predictable UUID values, including the zero UUID "00000000-0000-0000-0000-000000000000". The vulnerability occurs through two related but distinct failure paths, both ultimately caused by crypto/rand.Read() failures, compromising the security of all Fiber applications using these functions for security-critical operations. This issue is fixed in version 2.0.0-rc.4.
Severity
CWE
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/gofiber/utils/security/advisor… | x_refsource_CONFIRM |
| https://github.com/gofiber/utils/commit/6c6cf0470… | x_refsource_MISC |
Impacted products
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CVE-2025-66630 (GCVE-0-2025-66630)
Vulnerability from cvelistv5 – Published: 2026-02-09 18:04 – Updated: 2026-02-10 16:02
VLAI
Title
Fiber insecurely fallsback in utils.UUIDv4() / utils.UUID() — predictable / zero‑UUID on crypto/rand failure
Summary
Fiber is an Express inspired web framework written in Go. Before 2.52.11, on Go versions prior to 1.24, the underlying crypto/rand implementation can return an error if secure randomness cannot be obtained. Because no error is returned by the Fiber v2 UUID functions, application code may unknowingly rely on predictable, repeated, or low-entropy identifiers in security-critical pathways. This is especially impactful because many Fiber v2 middleware components (session middleware, CSRF, rate limiting, request-ID generation, etc.) default to using utils.UUIDv4(). This vulnerability is fixed in 2.52.11.
Severity
CWE
- CWE-338 - Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/gofiber/fiber/security/advisor… | x_refsource_CONFIRM |
| https://github.com/gofiber/fiber/commit/eb874b6f6… | x_refsource_MISC |
| https://github.com/gofiber/fiber/releases/tag/v2.52.11 | x_refsource_MISC |
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CVE-2025-67504 (GCVE-0-2025-67504)
Vulnerability from cvelistv5 – Published: 2025-12-09 03:31 – Updated: 2025-12-09 15:10
VLAI
Title
WBCE CMS has Weak Random Number Generator in Password Generation Function
Summary
WBCE CMS is a content management system. Versions 1.6.4 and below use function GenerateRandomPassword() to create passwords using PHP's rand(). rand() is not cryptographically secure, which allows password sequences to be predicted or brute-forced. This can lead to user account compromise or privilege escalation if these passwords are used for new accounts or password resets. The vulnerability is fixed in version 1.6.5.
Severity
9.1 (Critical)
CWE
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/WBCE/WBCE_CMS/security/advisor… | x_refsource_CONFIRM |
| https://github.com/WBCE/WBCE_CMS/commit/5d59fe021… | x_refsource_MISC |
| https://cwe.mitre.org/data/definitions/338.html | x_refsource_MISC |
| https://github.com/WBCE/WBCE_CMS/releases/tag/1.6.5 | x_refsource_MISC |
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CVE-2025-68932 (GCVE-0-2025-68932)
Vulnerability from cvelistv5 – Published: 2025-12-26 23:43 – Updated: 2025-12-29 16:51
VLAI
Title
FreshRSS has weak cryptographic randomness in remember-me token and nonce generation
Summary
FreshRSS is a free, self-hostable RSS aggregator. Prior to version 1.28.0, FreshRSS uses cryptographically weak random number generators (mt_rand() and uniqid()) to generate remember-me authentication tokens and challenge-response nonces. This allows attackers to predict valid session tokens, leading to account takeover through persistent session hijacking. The remember-me tokens provide permanent authentication and are the sole credential for "keep me logged in" functionality. This issue has been patched in version 1.28.0.
Severity
CWE
- CWE-338 - Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/FreshRSS/FreshRSS/security/adv… | x_refsource_CONFIRM |
| https://github.com/FreshRSS/FreshRSS/pull/8061 | x_refsource_MISC |
| https://github.com/FreshRSS/FreshRSS/commit/57e1a… | x_refsource_MISC |
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CVE-2025-69217 (GCVE-0-2025-69217)
Vulnerability from cvelistv5 – Published: 2025-12-30 00:41 – Updated: 2025-12-30 15:57
VLAI
Title
Coturn has unsafe nonce and relay port randomization due to weak random number generation.
Summary
coturn is a free open source implementation of TURN and STUN Server. Versions 4.6.2r5 through 4.7.0-r4 have a bad random number generator for nonces and port randomization after refactoring. Additionally, random numbers aren't generated with openssl's RAND_bytes but libc's random() (if it's not running on Windows). When fetching about 50 sequential nonces (i.e., through sending 50 unauthenticated allocations requests) it is possible to completely reconstruct the current state of the random number generator, thereby predicting the next nonce. This allows authentication while spoofing IPs. An attacker can send authenticated messages without ever receiving the responses, including the nonce (requires knowledge of the credentials, which is e.g., often the case in IoT settings). Since the port randomization is deterministic given the pseudorandom seed, an attacker can exactly reconstruct the ports and, hence predict the randomization of the ports. If an attacker allocates a relay port, they know the current port, and they are able to predict the next relay port (at least if it is not used before). Commit 11fc465f4bba70bb0ad8aae17d6c4a63a29917d9 contains a fix.
Severity
7.7 (High)
CWE
- CWE-338 - Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/coturn/coturn/security/advisor… | x_refsource_CONFIRM |
| https://github.com/coturn/coturn/commit/11fc465f4… | x_refsource_MISC |
| https://github.com/coturn/coturn/commit/88ced4713… | x_refsource_MISC |
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Mitigation
Phase: Implementation
Description:
- Use functions or hardware which use a hardware-based random number generation for all crypto. This is the recommended solution. Use CyptGenRandom on Windows, or hw_rand() on Linux.
No CAPEC attack patterns related to this CWE.