Common Weakness Enumeration
CWE-203
AllowedObservable Discrepancy
Abstraction: Base · Status: Incomplete
The product behaves differently or sends different responses under different circumstances in a way that is observable to an unauthorized actor.
836 vulnerabilities reference this CWE, most recent first.
CVE-2026-21386 (GCVE-0-2026-21386)
Vulnerability from cvelistv5 – Published: 2026-03-16 14:51 – Updated: 2026-03-16 18:39
VLAI
EPSS
VEX
Title
Private channel enumeration via /mute slash command
Summary
Mattermost versions 11.3.x <= 11.3.0, 11.2.x <= 11.2.2, 10.11.x <= 10.11.10 fail to use consistent error responses when handling the /mute command which allows an authenticated team member to enumerate private channels they are not authorized to know about via differing error messages for nonexistent versus private channels. Mattermost Advisory ID: MMSA-2026-00588
Severity
4.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-203 - Observable Discrepancy
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://mattermost.com/security-updates | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Mattermost | Mattermost |
Affected:
11.3.0 , ≤ 11.3.0
(semver)
Affected: 11.2.0 , ≤ 11.2.2 (semver) Affected: 10.11.0 , ≤ 10.11.10 (semver) Unaffected: 11.4.0 Unaffected: 11.3.1 Unaffected: 11.2.3 Unaffected: 10.11.11 |
Credits
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CVE-2026-8242 (GCVE-0-2026-8242)
Vulnerability from cvelistv5 – Published: 2026-05-10 08:15 – Updated: 2026-05-11 17:31
VLAI
EPSS
VEX
Title
Industrial Application Software IAS Canias ERP Login RMI doAction response discrepancy
Summary
A vulnerability was found in Industrial Application Software IAS Canias ERP 8.03. The impacted element is the function doAction of the component Login RMI Interface. Performing a manipulation results in observable response discrepancy. The attack is possible to be carried out remotely. A high degree of complexity is needed for the attack. The exploitability is regarded as difficult. The exploit has been made public and could be used. The vendor was contacted early about this disclosure but did not respond in any way.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/362458 | vdb-entrytechnical-description |
| https://vuldb.com/vuln/362458/cti | signaturepermissions-required |
| https://vuldb.com/submit/808295 | third-party-advisory |
| https://hawktrace.com/blog/caniaserp | related |
| https://gist.github.com/0xb1lal/85422a63c10a001c7… | broken-linkexploit |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Industrial Application Software IAS | Canias ERP |
Affected:
8.03
|
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CVE-2026-4045 (GCVE-0-2026-4045)
Vulnerability from cvelistv5 – Published: 2026-03-12 16:02 – Updated: 2026-03-12 16:51
VLAI
EPSS
VEX
Title
projectsend Auth.php response discrepancy
Summary
A flaw has been found in projectsend up to r1945. This impacts an unknown function of the file includes/Classes/Auth.php. Executing a manipulation of the argument ldap_email can lead to observable response discrepancy. The attack can be executed remotely. A high complexity level is associated with this attack. The exploitability is said to be difficult. The exploit has been published and may be used. 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 (v2.0.3)
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://vuldb.com/?id.350657 | vdb-entrytechnical-description |
| https://vuldb.com/?ctiid.350657 | signaturepermissions-required |
| https://vuldb.com/?submit.769577 | third-party-advisory |
| https://drive.google.com/file/d/1TNwWNTcra2ykx0yX… | exploit |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| n/a | projectsend |
Affected:
r1945
cpe:2.3:a:projectsend:projectsend:*:*:*:*:*:*:*:* |
Credits
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CVE-2026-4040 (GCVE-0-2026-4040)
Vulnerability from cvelistv5 – Published: 2026-03-12 12:02 – Updated: 2026-03-12 13:08 X_Open Source
VLAI
EPSS
VEX
Title
OpenClaw File Existence tools.exec.safeBins information exposure
Summary
A vulnerability was identified in OpenClaw up to 2026.2.17. This issue affects the function tools.exec.safeBins of the component File Existence Handler. The manipulation leads to information exposure through discrepancy. The attack needs to be performed locally. Upgrading to version 2026.2.19-beta.1 is capable of addressing this issue. The identifier of the patch is bafdbb6f112409a65decd3d4e7350fbd637c7754. Upgrading the affected component is advised.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://vuldb.com/?id.350652 | vdb-entrytechnical-description |
| https://vuldb.com/?ctiid.350652 | signaturepermissions-required |
| https://vuldb.com/?submit.769581 | third-party-advisory |
| https://github.com/openclaw/openclaw/security/adv… | related |
| https://github.com/openclaw/openclaw/commit/bafdb… | patch |
| https://github.com/openclaw/openclaw/releases/tag… | patch |
| https://github.com/openclaw/openclaw/ | product |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| n/a | OpenClaw |
Affected:
2026.2.0
Affected: 2026.2.1 Affected: 2026.2.2 Affected: 2026.2.3 Affected: 2026.2.4 Affected: 2026.2.5 Affected: 2026.2.6 Affected: 2026.2.7 Affected: 2026.2.8 Affected: 2026.2.9 Affected: 2026.2.10 Affected: 2026.2.11 Affected: 2026.2.12 Affected: 2026.2.13 Affected: 2026.2.14 Affected: 2026.2.15 Affected: 2026.2.16 Affected: 2026.2.17 Unaffected: 2026.2.19-beta.1 cpe:2.3:a:openclaw:openclaw:*:*:*:*:*:*:*:* |
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CVE-2026-3580 (GCVE-0-2026-3580)
Vulnerability from cvelistv5 – Published: 2026-03-19 19:46 – Updated: 2026-03-19 20:25
VLAI
EPSS
VEX
Title
Compiler-induced timing leak in sp_256_get_entry_256_9 on RISC-V
Summary
In wolfSSL 5.8.4, constant-time masking logic in sp_256_get_entry_256_9 is optimized into conditional branches (bnez) by GCC when targeting RISC-V RV32I with -O3. This transformation breaks the side-channel resistance of ECC scalar multiplication, potentially allowing a local attacker to recover secret keys via timing analysis.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-203 - Observable Discrepancy
Assigner
References
1 reference
Credits
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CVE-2026-3579 (GCVE-0-2026-3579)
Vulnerability from cvelistv5 – Published: 2026-03-19 19:37 – Updated: 2026-03-24 01:36
VLAI
EPSS
VEX
Title
Non-constant time multiplication subroutine __muldi3 on RISC-V RV32I
Summary
wolfSSL 5.8.4 on RISC-V RV32I architectures lacks a constant-time software implementation for 64-bit multiplication. The compiler-inserted __muldi3 subroutine executes in variable time based on operand values. This affects multiple SP math functions (sp_256_mul_9, sp_256_sqr_9, etc.), leading to a timing side-channel that may expose sensitive cryptographic data.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-203 - Observable Discrepancy
Assigner
References
1 reference
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CVE-2025-64749 (GCVE-0-2025-64749)
Vulnerability from cvelistv5 – Published: 2025-11-13 21:34 – Updated: 2025-11-14 17:15
VLAI
EPSS
VEX
Title
Directus Vulnerable to Information Leakage in Existing Collections
Summary
Directus is a real-time API and App dashboard for managing SQL database content. An observable difference in error messaging was found in the Directus REST API in versions of Directus prior to version 11.13.0. The `/items/{collection}` API returns different error messages for two cases: when a user tries to access an existing collection which they are not authorized to access, and when user tries to access a non-existing collection. The two differing error messages leak the existence of collections to users which are not authorized to access these collections. Version 11.13.0 fixes the issue.
Severity
4.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/directus/directus/security/adv… | x_refsource_CONFIRM |
| https://github.com/directus/directus/commit/f99c9… | x_refsource_MISC |
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CVE-2025-57770 (GCVE-0-2025-57770)
Vulnerability from cvelistv5 – Published: 2025-08-22 16:50 – Updated: 2025-08-22 20:05
VLAI
EPSS
VEX
Title
ZITADEL user enumeration vulnerability in login UI
Summary
The open-source identity infrastructure software Zitadel allows administrators to disable the user self-registration. Versions 4.0.0 to 4.0.2, 3.0.0 to 3.3.6, and all versions prior to 2.71.15 are vulnerable to a username enumeration issue in the login interface. The login UI includes a security feature, Ignoring unknown usernames, that is intended to prevent username enumeration by returning a generic response for both valid and invalid usernames. This vulnerability allows an unauthenticated attacker to bypass this protection by submitting arbitrary userIDs to the select account page and distinguishing between valid and invalid accounts based on the system's response. For effective exploitation, an attacker needs to iterate through possible userIDs, but the impact can be limited by implementing rate limiting or similar measures. The issue has been patched in versions 4.0.3, 3.4.0, and 2.71.15.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-203 - Observable Discrepancy
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://github.com/zitadel/zitadel/security/advis… | x_refsource_CONFIRM |
| https://github.com/zitadel/zitadel/commit/7abe759… | x_refsource_MISC |
| https://github.com/zitadel/zitadel/releases/tag/v… | x_refsource_MISC |
| https://github.com/zitadel/zitadel/releases/tag/v3.4.0 | x_refsource_MISC |
| https://github.com/zitadel/zitadel/releases/tag/v4.0.3 | x_refsource_MISC |
| https://zitadel.com/docs/self-hosting/manage/prod… | x_refsource_MISC |
Impacted products
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CVE-2025-54999 (GCVE-0-2025-54999)
Vulnerability from cvelistv5 – Published: 2025-08-09 02:00 – Updated: 2025-08-11 14:40
VLAI
EPSS
VEX
Title
OpenBao: Timing Side-Channel in Userpass Auth Method
Summary
OpenBao exists to provide a software solution to manage, store, and distribute sensitive data including secrets, certificates, and keys. In versions 0.1.0 through 2.3.1, when using OpenBao's userpass auth method, user enumeration was possible due to timing difference between non-existent users and users with stored credentials. This is independent of whether the supplied credentials were valid for the given user. This issue was fixed in version 2.3.2. To work around this issue, users may use another auth method or apply rate limiting quotas to limit the number of requests in a period of time: https://openbao.org/api-docs/system/rate-limit-quotas/.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-203 - Observable Discrepancy
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/openbao/openbao/security/advis… | x_refsource_CONFIRM |
| https://github.com/openbao/openbao/commit/4d9b5d3… | x_refsource_MISC |
| https://discuss.hashicorp.com/t/hcsec-2025-15-tim… | x_refsource_MISC |
| https://discuss.hashicorp.com/t/hcsec-2025-21-vau… | x_refsource_MISC |
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CVE-2025-54477 (GCVE-0-2025-54477)
Vulnerability from cvelistv5 – Published: 2025-09-30 16:02 – Updated: 2025-10-01 04:34
VLAI
EPSS
VEX
Title
Joomla! Core - [20250902] User-Enumeration in passkey authentication method
Summary
Improper handling of authentication requests lead to a user enumeration vector in the passkey authentication method.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-203 - Observable Discrepancy
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://developer.joomla.org/security-centre/1011… | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Joomla! Project | Joomla! CMS |
Affected:
4.0.0-4.4.13
Affected: 5.0.0-5.3.3 |
Credits
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Mitigation MIT-46
Architecture and Design
Strategy: Separation of Privilege
- Compartmentalize the system to have "safe" areas where trust boundaries can be unambiguously drawn. Do not allow sensitive data to go outside of the trust boundary and always be careful when interfacing with a compartment outside of the safe area.
- Ensure that appropriate compartmentalization is built into the system design, and the compartmentalization allows for and reinforces privilege separation functionality. Architects and designers should rely on the principle of least privilege to decide the appropriate time to use privileges and the time to drop privileges.
Mitigation MIT-39
Implementation
- Ensure that error messages only contain minimal details that are useful to the intended audience and no one else. The messages need to strike the balance between being too cryptic (which can confuse users) or being too detailed (which may reveal more than intended). The messages should not reveal the methods that were used to determine the error. Attackers can use detailed information to refine or optimize their original attack, thereby increasing their chances of success.
- If errors must be captured in some detail, record them in log messages, but consider what could occur if the log messages can be viewed by attackers. Highly sensitive information such as passwords should never be saved to log files.
- Avoid inconsistent messaging that might accidentally tip off an attacker about internal state, such as whether a user account exists or not.
CAPEC-189: Black Box Reverse Engineering
An adversary discovers the structure, function, and composition of a type of computer software through black box analysis techniques. 'Black Box' methods involve interacting with the software indirectly, in the absence of direct access to the executable object. Such analysis typically involves interacting with the software at the boundaries of where the software interfaces with a larger execution environment, such as input-output vectors, libraries, or APIs. Black Box Reverse Engineering also refers to gathering physical side effects of a hardware device, such as electromagnetic radiation or sounds.