Common Weakness Enumeration
CWE-330
DiscouragedUse of Insufficiently Random Values
Abstraction: Class · Status: Stable
The product uses insufficiently random numbers or values in a security context that depends on unpredictable numbers.
476 vulnerabilities reference this CWE, most recent first.
CVE-2026-17274 (GCVE-0-2026-17274)
Vulnerability from cvelistv5 – Published: 2026-09-04 16:37 – Updated: 2026-09-08 17:31
VLAI
EPSS
VEX
Title
IBM i is Affected By Multiple Vulnerabilities in Debug Server
Summary
IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote authenticated attacker to bypass security restrictions due to predictable server seeds.
Severity
5.4 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-08 17:30 UTC
CWE
- CWE-330 - Use of Insufficiently Random Values
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.ibm.com/support/pages/node/7285844 | vendor-advisorypatch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| IBM | i |
Affected:
7.6
Affected: 7.5 Affected: 7.4 Affected: 7.3 cpe:2.3:a:ibm:i:7.6:*:*:*:*:*:*:* cpe:2.3:a:ibm:i:7.6.0:*:*:*:*:*:*:* cpe:2.3:a:ibm:i:7.5:*:*:*:*:*:*:* cpe:2.3:a:ibm:i:7.5.0:*:*:*:*:*:*:* cpe:2.3:a:ibm:i:7.4:*:*:*:*:*:*:* cpe:2.3:a:ibm:i:7.4.0:*:*:*:*:*:*:* cpe:2.3:a:ibm:i:7.3:*:*:*:*:*:*:* cpe:2.3:a:ibm:i:7.3.0:*:*:*:*:*:*:* |
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CVE-2026-14702 (GCVE-0-2026-14702)
Vulnerability from cvelistv5 – Published: 2026-07-05 04:00 – Updated: 2026-07-06 17:49
VLAI
EPSS
VEX
Title
zcaceres markdownify-mcp webpage-to-markdown Markdownify.ts saveToTempFile random values
Summary
A flaw has been found in zcaceres markdownify-mcp up to 1.1.0. This impacts the function saveToTempFile of the file src/Markdownify.ts of the component webpage-to-markdown/youtube-to-markdown/bing-search-to-markdown. This manipulation causes insufficiently random values. The attack is restricted to local execution. A high degree of complexity is needed for the attack. The exploitability is said to be difficult. The exploit has been published and may be used. The pull request to fix this issue awaits acceptance.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-06 17:49 UTC
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/376298 | vdb-entrytechnical-description |
| https://vuldb.com/vuln/376298/cti | signaturepermissions-required |
| https://vuldb.com/cve/CVE-2026-14702 | third-party-advisory |
| https://vuldb.com/submit/846942 | third-party-advisory |
| https://github.com/zcaceres/markdownify-mcp/issues/110 | exploitissue-tracking |
| https://github.com/zcaceres/markdownify-mcp/pull/111 | issue-trackingpatch |
| https://github.com/zcaceres/markdownify-mcp/ | product |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| zcaceres | markdownify-mcp |
Affected:
1.0
Affected: 1.1.0 cpe:2.3:a:zcaceres:markdownify-mcp:*:*:*:*:*:*:*:* |
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CVE-2026-14570 (GCVE-0-2026-14570)
Vulnerability from cvelistv5 – Published: 2026-07-05 01:30 – Updated: 2026-07-06 13:42
VLAI
EPSS
VEX
Title
Crypt::DSA versions before 1.22 for Perl draw the DSA signing nonce and private key from a biased random generator, leading to private-key recovery
Summary
Crypt::DSA versions before 1.22 for Perl draw the DSA signing nonce and private key from a biased random generator, leading to private-key recovery.
"Crypt::DSA::Util::makerandom forces the high bit of every value it returns to obtain an exactly N-bit integer for prime search. The signing nonce and the private key are drawn from makerandom. Because the high bit is always set, the result is not uniform: its top bit is fixed, producing insecure values."
An attacker who collects a modest number of signatures under an affected key, together with the public key, can recover the private key with a lattice attack.
Keys used to sign with an affected version should be considered compromised and new keys should be generated.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-06 13:41 UTC
CWE
- CWE-330 - Use of Insufficiently Random Values
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| TIMLEGGE | Crypt::DSA |
Affected:
0 , < 1.22
(custom)
|
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CVE-2026-11374 (GCVE-0-2026-11374)
Vulnerability from cvelistv5 – Published: 2026-06-23 08:19 – Updated: 2026-06-24 15:48
VLAI
EPSS
VEX
Title
Account Takeover via Predictable SSO Ticket Generation
Summary
In ManageEngine ADSelfService Plus, RecoveryManager Plus, M365 Manager Plus, and ADAudit Plus, the SSO tickets generated to authenticate that session could be predicted
by an unauthenticated user, leading to account takeover.
Severity
9 (Critical)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-24 03:56 UTC
CWE
Assigner
References
1 reference
Impacted products
4 products
| Vendor | Product | Version | |
|---|---|---|---|
| zohocorp | manageengine_adselfservice_plus |
Affected:
0 , < 6529
(custom)
|
|
| zohocorp | manageengine_recovery_manager_plus |
Affected:
0 , < 6321
(custom)
|
|
| zohocorp | manageengine_m365_manager_plus |
Affected:
0 , < 4817
(custom)
|
|
| zohocorp | manageengine_adaudit_plus |
Affected:
0 , < 8703
(custom)
|
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CVE-2026-7847 (GCVE-0-2026-7847)
Vulnerability from cvelistv5 – Published: 2026-05-05 16:30 – Updated: 2026-05-06 15:25
VLAI
EPSS
VEX
Title
chatchat-space Langchain-Chatchat Uploaded File openai_routes.py _get_file_id random values
Summary
A vulnerability was found in chatchat-space Langchain-Chatchat up to 0.3.1.3. The affected element is the function _get_file_id of the file libs/chatchat-server/chatchat/server/api_server/openai_routes.py of the component Uploaded File Handler. Performing a manipulation results in insufficiently random values. Access to the local network is required for this attack. The attack's complexity is rated as high. The exploitability is described as difficult. The exploit has been made public and could be used. The project was informed of the problem early through an issue report but has not responded yet.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-05 18:41 UTC
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/361126 | vdb-entrytechnical-description |
| https://vuldb.com/vuln/361126/cti | signaturepermissions-required |
| https://vuldb.com/submit/807796 | third-party-advisory |
| https://github.com/chatchat-space/Langchain-Chatc… | issue-tracking |
| https://github.com/3em0/cve_repo/blob/main/Langch… | exploit |
| https://github.com/chatchat-space/Langchain-Chatchat/ | product |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| chatchat-space | Langchain-Chatchat |
Affected:
0.3.1.0
Affected: 0.3.1.1 Affected: 0.3.1.2 Affected: 0.3.1.3 |
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CVE-2026-3416 (GCVE-0-2026-3416)
Vulnerability from cvelistv5 – Published: 2026-09-03 12:35 – Updated: 2026-09-03 12:55
VLAI
EPSS
VEX
Title
Predictable Pseudorandom Number Generation via Webhook HMAC Secret Generation in Multiple WSO2 Products Allows Forged Event Payloads
Summary
The API Publisher component previously used a non-cryptographic pseudorandom number generator (PRNG) to create shared secrets for Webhook HMAC validation. This PRNG lacks sufficient entropy for security-sensitive operations, allowing a sophisticated attacker to predict future secrets. This enables malicious actors to forge event payloads with valid HMAC signatures, bypassing the API Gateway's authenticity verification.
Successful exploitation could allow an attacker to predict shared secrets used for Webhook HMAC validation and forge event payloads with valid signatures. This may enable bypassing API Gateway authenticity checks, leading to unauthorized event injection, data manipulation, or downstream system compromise.
Severity
5.9 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-03 12:55 UTC
CWE
- CWE-330 - Use of Insufficiently Random Values
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://security.docs.wso2.com/en/latest/security… | vendor-advisory |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| WSO2 | WSO2 API Manager |
Unknown:
0 , < 4.1.0
(custom)
Affected: 4.1.0 , < 4.1.0.253 (custom) Affected: 4.2.0 , < 4.2.0.193 (custom) Affected: 4.3.0 , < 4.3.0.104 (custom) Affected: 4.4.0 , < 4.4.0.68 (custom) Affected: 4.5.0 , < 4.5.0.52 (custom) cpe:2.3:a:wso2:wso2_api_manager:*:*:*:*:*:*:*:* cpe:2.3:a:wso2:wso2_api_manager:*:*:*:*:*:*:*:* cpe:2.3:a:wso2:wso2_api_manager:*:*:*:*:*:*:*:* cpe:2.3:a:wso2:wso2_api_manager:*:*:*:*:*:*:*:* cpe:2.3:a:wso2:wso2_api_manager:*:*:*:*:*:*:*:* |
|
| WSO2 | WSO2 API Control Plane |
Affected:
4.5.0 , < 4.5.0.53
(custom)
cpe:2.3:a:wso2:wso2_api_control_plane:*:*:*:*:*:*:*:* |
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CVE-2026-2966 (GCVE-0-2026-2966)
Vulnerability from cvelistv5 – Published: 2026-02-23 02:02 – Updated: 2026-02-23 13:36 X_Open Source
VLAI
EPSS
VEX
Title
Cesanta Mongoose DNS Transaction ID dns.c mg_sendnsreq random values
Summary
A weakness has been identified in Cesanta Mongoose up to 7.20. The impacted element is the function mg_sendnsreq of the file /src/dns.c of the component DNS Transaction ID Handler. Executing a manipulation of the argument random can lead to insufficiently random values. The attack can be launched remotely. The attack requires a high level of complexity. The exploitability is regarded as difficult. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-02-23 13:36 UTC
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://vuldb.com/?id.347333 | vdb-entrytechnical-description |
| https://vuldb.com/?ctiid.347333 | signaturepermissions-required |
| https://vuldb.com/?submit.755304 | third-party-advisory |
| https://github.com/dwBruijn/CVEs/blob/main/Mongoo… | related |
| https://github.com/dwBruijn/CVEs/blob/main/Mongoo… | exploit |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Cesanta | Mongoose |
Affected:
7.0
Affected: 7.1 Affected: 7.2 Affected: 7.3 Affected: 7.4 Affected: 7.5 Affected: 7.6 Affected: 7.7 Affected: 7.8 Affected: 7.9 Affected: 7.10 Affected: 7.11 Affected: 7.12 Affected: 7.13 Affected: 7.14 Affected: 7.15 Affected: 7.16 Affected: 7.17 Affected: 7.18 Affected: 7.19 Affected: 7.20 cpe:2.3:a:cesanta:mongoose:*:*:*:*:*:*:*:* |
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CVE-2025-68704 (GCVE-0-2025-68704)
Vulnerability from cvelistv5 – Published: 2026-01-13 19:29 – Updated: 2026-01-13 19:54
VLAI
EPSS
VEX
Title
Jervis has a Weak Random for Timing Attack Mitigation
Summary
Jervis is a library for Job DSL plugin scripts and shared Jenkins pipeline libraries. Prior to 2.2, Jervis uses java.util.Random() which is not cryptographically secure for timing attack mitigation. This vulnerability is fixed in 2.2.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-01-13 19:54 UTC
CWE
- CWE-330 - Use of Insufficiently Random Values
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/samrocketman/jervis/security/a… | x_refsource_CONFIRM |
| https://github.com/samrocketman/jervis/commit/c39… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| samrocketman | jervis |
Affected:
< 2.2
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CVE-2025-66511 (GCVE-0-2025-66511)
Vulnerability from cvelistv5 – Published: 2025-12-05 16:42 – Updated: 2025-12-05 16:53
VLAI
EPSS
VEX
Title
Nextcloud Calendar app used predictable proposal participant tokens
Summary
Nextcloud Calendar is a calendar app for Nextcloud. Prior to 6.0.3, the Calendar app generates participant tokens for meeting proposals using a hash function, allowing an attacker to compute valid participant tokens, which allowed them to request details and submit dates in meeting proposals. The tokens are not purely random generated. This vulnerability is fixed in 6.0.3.
Severity
4.8 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-12-05 16:53 UTC
CWE
- CWE-330 - Use of Insufficiently Random Values
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/nextcloud/security-advisories/… | x_refsource_CONFIRM |
| https://github.com/nextcloud/calendar/pull/7659 | x_refsource_MISC |
| https://github.com/nextcloud/calendar/commit/8de1… | x_refsource_MISC |
| https://hackerone.com/reports/3385434 | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| nextcloud | security-advisories |
Affected:
>= 6.0.0-rc.1, < 6.0.3
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CVE-2025-64097 (GCVE-0-2025-64097)
Vulnerability from cvelistv5 – Published: 2026-01-22 14:57 – Updated: 2026-01-22 16:16
VLAI
EPSS
VEX
Title
NervesHub has Insufficient Token Entropy that Allows Authentication Bypass via Brute Force
Summary
NervesHub is a web service that allows users to manage over-the-air (OTA) firmware updates of devices in the field. A vulnerability present starting in version 1.0.0 and prior to version 2.3.0 allowed attackers to brute-force user API tokens due to the predictable format of previously issued tokens. Tokens included user-identifiable components and were not cryptographically secure, making them susceptible to guessing or enumeration. The vulnerability could have allowed unauthorized access to user accounts or API actions protected by these tokens. A fix is available in version 2.3.0 of NervesHub. This version introduces strong, cryptographically-random tokens using `:crypto.strong_rand_bytes/1`, hashing of tokens before database storage to prevent misuse even if the database is compromised, and context-aware token storage to distinguish between session and API tokens. There are no practical workarounds for this issue other than upgrading. In sensitive environments, as a temporary mitigation,
firewalling access to the NervesHub server can help limit exposure until an upgrade is possible.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-01-22 16:15 UTC
CWE
- CWE-330 - Use of Insufficiently Random Values
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/nerves-hub/nerves_hub_web/secu… | x_refsource_CONFIRM |
| https://github.com/nerves-hub/nerves_hub_web/pull/2024 | x_refsource_MISC |
| https://github.com/nerves-hub/nerves_hub_web/rele… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| nerves-hub | nerves_hub_web |
Affected:
>= 1.0.0, < 2.3.0
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"product": "nerves_hub_web",
"vendor": "nerves-hub",
"versions": [
{
"status": "affected",
"version": "\u003e= 1.0.0, \u003c 2.3.0"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "NervesHub is a web service that allows users to manage over-the-air (OTA) firmware updates of devices in the field. A vulnerability present starting in version 1.0.0 and prior to version 2.3.0 allowed attackers to brute-force user API tokens due to the predictable format of previously issued tokens. Tokens included user-identifiable components and were not cryptographically secure, making them susceptible to guessing or enumeration. The vulnerability could have allowed unauthorized access to user accounts or API actions protected by these tokens. A fix is available in version 2.3.0 of NervesHub. This version introduces strong, cryptographically-random tokens using `:crypto.strong_rand_bytes/1`, hashing of tokens before database storage to prevent misuse even if the database is compromised, and context-aware token storage to distinguish between session and API tokens. There are no practical workarounds for this issue other than upgrading. In sensitive environments, as a temporary mitigation,\nfirewalling access to the NervesHub server can help limit exposure until an upgrade is possible."
}
],
"metrics": [
{
"cvssV4_0": {
"attackComplexity": "LOW",
"attackRequirements": "PRESENT",
"attackVector": "NETWORK",
"baseScore": 9.5,
"baseSeverity": "CRITICAL",
"privilegesRequired": "NONE",
"subAvailabilityImpact": "HIGH",
"subConfidentialityImpact": "HIGH",
"subIntegrityImpact": "HIGH",
"userInteraction": "NONE",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:H",
"version": "4.0",
"vulnAvailabilityImpact": "NONE",
"vulnConfidentialityImpact": "HIGH",
"vulnIntegrityImpact": "HIGH"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-330",
"description": "CWE-330: Use of Insufficiently Random Values",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-01-22T14:57:00.362Z",
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M"
},
"references": [
{
"name": "https://github.com/nerves-hub/nerves_hub_web/security/advisories/GHSA-m9vj-776q-vc8m",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/nerves-hub/nerves_hub_web/security/advisories/GHSA-m9vj-776q-vc8m"
},
{
"name": "https://github.com/nerves-hub/nerves_hub_web/pull/2024",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/nerves-hub/nerves_hub_web/pull/2024"
},
{
"name": "https://github.com/nerves-hub/nerves_hub_web/releases/tag/v2.3.0",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/nerves-hub/nerves_hub_web/releases/tag/v2.3.0"
}
],
"source": {
"advisory": "GHSA-m9vj-776q-vc8m",
"discovery": "UNKNOWN"
},
"title": "NervesHub has Insufficient Token Entropy that Allows Authentication Bypass via Brute Force"
}
},
"cveMetadata": {
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"assignerShortName": "GitHub_M",
"cveId": "CVE-2025-64097",
"datePublished": "2026-01-22T14:57:00.362Z",
"dateReserved": "2025-10-27T15:26:14.126Z",
"dateUpdated": "2026-01-22T16:16:06.007Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
Mitigation
Architecture and Design
- Use a well-vetted algorithm that is currently considered to be strong by experts in the field, and select well-tested implementations with adequate length seeds.
- In general, if a pseudo-random number generator is not advertised as being cryptographically secure, then it is probably a statistical PRNG and should not be used in security-sensitive contexts.
- Pseudo-random number generators can produce predictable numbers if the generator is known and the seed can be guessed. A 256-bit seed is a good starting point for producing a "random enough" number.
Mitigation
Implementation
Consider a PRNG that re-seeds itself as needed from high quality pseudo-random output sources, such as hardware devices.
Mitigation MIT-2
Architecture and Design
Requirements
Strategy: Libraries or Frameworks
Use products or modules that conform to FIPS 140-2 [REF-267] to avoid obvious entropy problems. Consult FIPS 140-2 Annex C ("Approved Random Number Generators").
CAPEC-112: Brute Force
In this attack, some asset (information, functionality, identity, etc.) is protected by a finite secret value. The attacker attempts to gain access to this asset by using trial-and-error to exhaustively explore all the possible secret values in the hope of finding the secret (or a value that is functionally equivalent) that will unlock the asset.
CAPEC-485: Signature Spoofing by Key Recreation
An attacker obtains an authoritative or reputable signer's private signature key by exploiting a cryptographic weakness in the signature algorithm or pseudorandom number generation and then uses this key to forge signatures from the original signer to mislead a victim into performing actions that benefit the attacker.
CAPEC-59: Session Credential Falsification through Prediction
This attack targets predictable session ID in order to gain privileges. The attacker can predict the session ID used during a transaction to perform spoofing and session hijacking.