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.
445 vulnerabilities reference this CWE, most recent first.
CVE-2026-41207 (GCVE-0-2026-41207)
Vulnerability from cvelistv5 – Published: 2026-06-04 17:22 – Updated: 2026-06-08 14:17
VLAI
EPSS
VEX
Title
netty-incubator-codec-ohttp's HPKEContext operations may produce empty byte[] on failures
Summary
The netty incubator codec.bhttp is a java language binary http parser. Prior to version 0.0.21.Final, HKDF_expand returns non-NULL on failure. The byte[] is filled with zeros and has no way to distinguish success from failure. Since this output is used as HKDF key material for the response AEAD, a failure silently produces an all-zero key. When EVP_HPKE_CTX_export fails it also returns an empty byte[] array filled with zeros. This byte[] feeds directly into OHttpCrypto.createResponseAEAD(...). A silent all-zero export secret would produce a deterministic, attacker-predictable AEAD key. Version 0.0.21.Final patches the issue.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-330 - Use of Insufficiently Random Values
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/netty/netty-incubator-codec-oh… | x_refsource_CONFIRM |
| https://github.com/netty/netty-incubator-codec-oh… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| netty | netty-incubator-codec-ohttp |
Affected:
< 0.0.21.Final
|
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CVE-2026-40975 (GCVE-0-2026-40975)
Vulnerability from cvelistv5 – Published: 2026-04-27 23:32 – Updated: 2026-07-15 01:00
VLAI
EPSS
VEX
Summary
Values produced by ${random.value} are not suitable for use as secrets. ${random.uuid} is not affected. ${random.int} and ${random.long} should never be used for secrets as they are numeric values with a predictable range.
Affected: Spring Boot 4.0.0–4.0.5 (fix 4.0.6), 3.5.0–3.5.13 (fix 3.5.14), 3.4.0–3.4.15 (fix 3.4.16), 3.3.0–3.3.18 (fix 3.3.19), 2.7.0–2.7.32 (fix 2.7.33); random value property source / weak PRNG for secrets. Versions that are no longer supported are also affected per vendor advisory.
Severity
4.8 (Medium)
8.2 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
8 references
| URL | Tags |
|---|---|
| https://spring.io/security/cve-2026-40975 | |
| https://access.redhat.com/security/cve/CVE-2026-40975 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2463331 | issue-trackingx_refsource_REDHAT |
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| https://access.redhat.com/errata/RHSA-2026:25089 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:22619 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:21772 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:17668 | vendor-advisoryx_refsource_REDHAT |
Impacted products
17 products
| Vendor | Product | Version | |
|---|---|---|---|
| Spring | Spring Boot |
Affected:
4.0.0 , < 4.0.6
(custom)
Affected: 3.5.0 , < 3.5.14 (custom) Affected: 3.4.0 , < 3.4.16 (custom) Affected: 3.3.0 , < 3.3.19 (custom) Affected: 2.7.0 , < 2.7.33 (custom) |
|
| Red Hat | HawtIO HawtIO 4.4.0 |
cpe:/a:redhat:apache_camel_hawtio:4.4::el9 |
|
| Red Hat | Red Hat build of Apache Camel 4.18.1 for Spring Boot 3.5.14 |
cpe:/a:redhat:apache_camel_spring_boot:4.18 |
|
| Red Hat | Red Hat Data Grid 8.6.1 |
cpe:/a:redhat:jboss_data_grid:8 |
|
| Red Hat | Red Hat OpenShift Dev Spaces 3.28 |
Unaffected:
1779528224 , < *
(rpm)
cpe:/a:redhat:openshift_devspaces:3.28::el9 |
|
| Red Hat | Red Hat OpenShift Dev Spaces 3.28 |
Unaffected:
1779359423 , < *
(rpm)
cpe:/a:redhat:openshift_devspaces:3.28::el9 |
|
| Red Hat | Red Hat AMQ Broker 7 |
cpe:/a:redhat:amq_broker:7 |
|
| Red Hat | Red Hat AMQ Clients |
cpe:/a:redhat:amq_clients:2023 |
|
| Red Hat | Red Hat build of OptaPlanner 8 |
cpe:/a:redhat:optaplanner:::el6 |
|
| Red Hat | Red Hat Enterprise Linux 8 |
cpe:/o:redhat:enterprise_linux:8 |
|
| Red Hat | Red Hat Enterprise Linux 9 |
cpe:/o:redhat:enterprise_linux:9 |
|
| Red Hat | Red Hat Fuse 7 |
cpe:/a:redhat:jboss_fuse:7 |
|
| Red Hat | Red Hat JBoss Enterprise Application Platform 7 |
cpe:/a:redhat:jboss_enterprise_application_platform:7 |
|
| Red Hat | Red Hat JBoss Enterprise Application Platform 8 |
cpe:/a:redhat:jboss_enterprise_application_platform:8 |
|
| Red Hat | Red Hat JBoss Enterprise Application Platform Expansion Pack |
cpe:/a:redhat:jbosseapxp |
|
| Red Hat | Red Hat Process Automation 7 |
cpe:/a:redhat:jboss_enterprise_bpms_platform:7 |
|
| Red Hat | Red Hat Single Sign-On 7 |
cpe:/a:redhat:red_hat_single_sign_on:7 |
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CVE-2026-40496 (GCVE-0-2026-40496)
Vulnerability from cvelistv5 – Published: 2026-04-21 01:38 – Updated: 2026-04-21 13:50
VLAI
EPSS
VEX
Title
FreeScout has Predictable Attachment Token that Allows Unauthenticated Private File Download via Brute Force
Summary
FreeScout is a free self-hosted help desk and shared mailbox. Prior to version 1.8.213, attachment download tokens are generated using a weak and predictable formula: `md5(APP_KEY + attachment_id + size)`. Since attachment_id is sequential and size can be brute-forced in a small range, an unauthenticated attacker can forge valid tokens and download any private attachment without credentials. Version 1.8.213 fixes the issue.
Severity
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/freescout-help-desk/freescout/… | x_refsource_CONFIRM |
| https://github.com/freescout-help-desk/freescout/… | x_refsource_MISC |
| https://github.com/freescout-help-desk/freescout/… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| freescout-help-desk | freescout |
Affected:
< 1.8.213
|
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CVE-2026-40306 (GCVE-0-2026-40306)
Vulnerability from cvelistv5 – Published: 2026-04-17 21:09 – Updated: 2026-04-20 16:18
VLAI
EPSS
VEX
Title
DNN has same HostGUID for all new installs
Summary
DNN (formerly DotNetNuke) is an open-source web content management platform (CMS) in the Microsoft ecosystem. All new installations of DNN 10.x.x - 10.2.1 have the same Host GUID. This does not affect upgrades from 9.x.x. Version 10.2.2 patches the issue.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-330 - Use of Insufficiently Random Values
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/dnnsoftware/Dnn.Platform/secur… | x_refsource_CONFIRM |
| https://github.com/dnnsoftware/Dnn.Platform/relea… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| dnnsoftware | Dnn.Platform |
Affected:
>= 10.0.0, < 10.2.2
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CVE-2026-34511 (GCVE-0-2026-34511)
Vulnerability from cvelistv5 – Published: 2026-04-03 20:45 – Updated: 2026-04-06 16:57 X_Open Source
VLAI
EPSS
VEX
Title
OpenClaw < 2026.4.2 - PKCE Verifier Exposure via OAuth State Parameter
Summary
OpenClaw before 2026.4.2 reuses the PKCE verifier as the OAuth state parameter in the Gemini OAuth flow, exposing it through the redirect URL. Attackers who capture the redirect URL can obtain both the authorization code and PKCE verifier, defeating PKCE protection and enabling token redemption.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-330 - Use of Insufficiently Random Values
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/openclaw/openclaw/security/adv… | vendor-advisory |
| https://github.com/openclaw/openclaw/commit/a26f4… | patch |
| https://www.vulncheck.com/advisories/openclaw-pkc… | third-party-advisory |
Impacted products
Date Public
2026-04-02 00:00
Credits
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CVE-2026-33710 (GCVE-0-2026-33710)
Vulnerability from cvelistv5 – Published: 2026-04-10 18:59 – Updated: 2026-04-13 15:36
VLAI
EPSS
VEX
Title
Chamilo LMS has Weak REST API Key Generation (Predictable)
Summary
Chamilo LMS is a learning management system. Prior to 1.11.38 and 2.0.0-RC.3, REST API keys are generated using md5(time() + (user_id * 5) - rand(10000, 10000)). The rand(10000, 10000) call always returns exactly 10000 (min == max), making the formula effectively md5(timestamp + user_id*5 - 10000). An attacker who knows a username and approximate key creation time can brute-force the API key. This vulnerability is fixed in 1.11.38 and 2.0.0-RC.3.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-330 - Use of Insufficiently Random Values
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/chamilo/chamilo-lms/security/a… | x_refsource_CONFIRM |
| https://github.com/chamilo/chamilo-lms/commit/444… | x_refsource_MISC |
| https://github.com/chamilo/chamilo-lms/commit/e74… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| chamilo | chamilo-lms |
Affected:
< 1.11.38
Affected: >= 2.0.0-alpha.1, < 2.0.0-RC.3 |
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CVE-2026-28415 (GCVE-0-2026-28415)
Vulnerability from cvelistv5 – Published: 2026-02-27 21:44 – Updated: 2026-03-02 21:55
VLAI
EPSS
VEX
Title
Gradio has Open Redirect in OAuth Flow
Summary
Gradio is an open-source Python package designed for quick prototyping. Prior to version 6.6.0, the _redirect_to_target() function in Gradio's OAuth flow accepts an unvalidated _target_url query parameter, allowing redirection to arbitrary external URLs. This affects the /logout and /login/callback endpoints on Gradio apps with OAuth enabled (i.e. apps running on Hugging Face Spaces with gr.LoginButton). Starting in version 6.6.0, the _target_url parameter is sanitized to only use the path, query, and fragment, stripping any scheme or host.
Severity
4.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/gradio-app/gradio/security/adv… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| gradio-app | gradio |
Affected:
< 6.6.0
|
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CVE-2026-27755 (GCVE-0-2026-27755)
Vulnerability from cvelistv5 – Published: 2026-02-27 18:09 – Updated: 2026-03-02 17:30
VLAI
EPSS
VEX
Title
SODOLA SL902-SWTGW124AS <= 200.1.20 Predictable Session ID
Summary
SODOLA SL902-SWTGW124AS firmware versions through 200.1.20 contain a weak session identifier generation vulnerability that allows attackers to forge authenticated sessions by computing predictable MD5-based cookies. Attackers who know or guess valid credentials can calculate the session identifier offline and bypass authentication without completing the login flow, gaining unauthorized access to the device.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-330 - Use of Insufficiently Random Values
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://www.sodola-network.com/products/sodola-6-… | product |
| https://www.vulncheck.com/advisories/sodola-sl902… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Shenzhen Hongyavision Technology Co., Ltd. (Sodola Networks) | SODOLA SL902-SWTGW124AS |
Affected:
0 , ≤ 200.1.20
(semver)
|
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CVE-2026-27637 (GCVE-0-2026-27637)
Vulnerability from cvelistv5 – Published: 2026-02-25 03:41 – Updated: 2026-02-25 15:21
VLAI
EPSS
VEX
Title
FreeScout's Predictable Authentication Token Enables Account Takeover
Summary
FreeScout is a free help desk and shared inbox built with PHP's Laravel framework. Prior to version 1.8.206, FreeScout's `TokenAuth` middleware uses a predictable authentication token computed as `MD5(user_id + created_at + APP_KEY)`. This token is static (never expires/rotates), and if an attacker obtains the `APP_KEY` — a well-documented and common exposure vector in Laravel applications — they can compute a valid token for any user, including the administrator, achieving full account takeover without any password. This vulnerability can be exploited on its own or in combination with CVE-2026-27636. Version 1.8.206 fixes both vulnerabilities.
Severity
9.8 (Critical)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-330 - Use of Insufficiently Random Values
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/freescout-help-desk/freescout/… | x_refsource_CONFIRM |
| https://github.com/freescout-help-desk/freescout/… | x_refsource_MISC |
| https://github.com/freescout-help-desk/freescout/… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| freescout-help-desk | freescout |
Affected:
< 1.8.206
|
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CVE-2026-27515 (GCVE-0-2026-27515)
Vulnerability from cvelistv5 – Published: 2026-02-24 15:04 – Updated: 2026-02-27 18:58
VLAI
EPSS
VEX
Title
Binardat 10G08-0800GSM Network Switch Predictable Session Identifiers
Summary
Binardat 10G08-0800GSM network switch firmware versions prior to V300SP10260209 generate predictable numeric session identifiers in the web management interface. An attacker can guess valid session IDs and hijack authenticated sessions.
Severity
9.1 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-330 - Use of Insufficiently Random Values
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://www.binardat.com/products/8-port-10-gigab… | product |
| https://www.vulncheck.com/advisories/binardat-10g… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Binardat Ltd. | 10G08-0800GSM Network Switch |
Affected:
0 , < V300SP10260209
(custom)
|
Credits
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"value": "Binardat 10G08-0800GSM network switch firmware versions prior to\u00a0V300SP10260209 generate predictable numeric session identifiers in the web management interface. An attacker can guess valid session IDs and hijack authenticated sessions."
}
],
"metrics": [
{
"cvssV4_0": {
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"attackVector": "NETWORK",
"baseScore": 9.3,
"baseSeverity": "CRITICAL",
"exploitMaturity": "NOT_DEFINED",
"privilegesRequired": "NONE",
"providerUrgency": "NOT_DEFINED",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "NONE",
"valueDensity": "NOT_DEFINED",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N",
"version": "4.0",
"vulnAvailabilityImpact": "NONE",
"vulnConfidentialityImpact": "HIGH",
"vulnIntegrityImpact": "HIGH",
"vulnerabilityResponseEffort": "NOT_DEFINED"
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"format": "CVSS",
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"value": "GENERAL"
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{
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"baseScore": 9.1,
"baseSeverity": "CRITICAL",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
"version": "3.1"
},
"format": "CVSS",
"scenarios": [
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"value": "GENERAL"
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],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-330",
"description": "CWE-330 Use of Insufficiently Random Values",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-02-24T15:04:41.427Z",
"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
"shortName": "VulnCheck"
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"references": [
{
"tags": [
"product"
],
"url": "https://www.binardat.com/products/8-port-10-gigabit-sfp-managed-switch,-support-1g-sfp-and-10g-sfp-module,-160gbps-bandwidth,-l3-web-managed,-metal-fanless-fiber-binardat-network-switch"
},
{
"tags": [
"third-party-advisory"
],
"url": "https://www.vulncheck.com/advisories/binardat-10g08-0800gsm-network-switch-predictable-session-identifiers"
}
],
"source": {
"discovery": "EXTERNAL"
},
"title": "Binardat 10G08-0800GSM Network Switch Predictable Session Identifiers",
"x_generator": {
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}
},
"cveMetadata": {
"assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
"assignerShortName": "VulnCheck",
"cveId": "CVE-2026-27515",
"datePublished": "2026-02-24T15:04:41.427Z",
"dateReserved": "2026-02-19T19:51:07.328Z",
"dateUpdated": "2026-02-27T18:58:38.289Z",
"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.