Common Weakness Enumeration

CWE-1289

Allowed

Improper Validation of Unsafe Equivalence in Input

Abstraction: Base · Status: Incomplete

The product receives an input value that is used as a resource identifier or other type of reference, but it does not validate or incorrectly validates that the input is equivalent to a potentially-unsafe value.

75 vulnerabilities reference this CWE, most recent first.

CVE-2026-106445 (GCVE-0-2026-106445)

Vulnerability from cvelistv5 – Published: 2026-10-06 19:39 – Updated: 2026-10-06 19:39
VLAI
Title
Handlebars: JavaScript Injection via Own Property Check Bypass
Summary
Handlebars provides the power necessary to let users build semantic templates. From 4.0.0 until 4.7.10, Handlebars lookupProperty returns Function.prototype.constructor before applying the prototype-access deny list because constructor is an own property of Function.prototype. When an attacker can render a controlled template with allowProtoMethodsByDefault enabled and an accessible function in the template context, the template can traverse from that function through its prototype to Function.prototype and then obtain the Function constructor through the own-property bypass. This permits attacker-controlled JavaScript to execute with the server application's privileges. This issue is fixed in version 4.7.10.
CWE
  • CWE-184 - Incomplete List of Disallowed Inputs
  • CWE-1289 - Improper Validation of Unsafe Equivalence in Input
Impacted products
Vendor Product Version
handlebars-lang handlebars.js Affected: >= 4.0.0, < 4.7.10
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CVE-2026-105048 (GCVE-0-2026-105048)

Vulnerability from cvelistv5 – Published: 2026-10-02 22:08 – Updated: 2026-10-06 15:08
VLAI
Summary
The Playground feature of Zilliz Attu before 3.0.0 allows SSRF (proxying of requests to private IP addresses).
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-06 15:08 UTC
CWE
  • CWE-1289 - Improper Validation of Unsafe Equivalence in Input
References
Impacted products
Vendor Product Version
Zilliz Attu Affected: 2.6.5 , < 3.0.0 (semver)
Unknown: 0 , < 2.6.5 (semver)
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CVE-2026-102478 (GCVE-0-2026-102478)

Vulnerability from cvelistv5 – Published: 2026-10-07 01:17 – Updated: 2026-10-07 18:40
VLAI
Summary
In affected versions of Octopus Server, an authenticated user with permission to modify roles could bypass the protections preventing access abuse resulting in privilege escalation. It was possible for the built-in role to be weakened and the attacker's account added to a privileged team. This was achievable due to improper validation of unsafe equivalence in inputs.
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-07 18:40 UTC
CWE
  • CWE-1289 - Improper Validation of Unsafe Equivalence in Input
References
Impacted products
Vendor Product Version
Octopus Deploy Octopus Server Affected: 2023.2.945 , < 2026.1.11768 (custom)
Affected: 2026.2.0 , < 2026.2.13408 (custom)
Affected: 2026.3.0 , < 2026.3.15816 (custom)
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CVE-2026-101015 (GCVE-0-2026-101015)

Vulnerability from cvelistv5 – Published: 2026-09-28 08:30 – Updated: 2026-10-01 14:10
VLAI
Title
Trusted Domain Project OpenDMARC policy.c improper validation of unsafe equivalence in input
Summary
A flaw has been found in Trusted Domain Project OpenDMARC up to 1.4.2. Affected by this issue is some unknown functionality of the file policy.c of the component Domain Handler. Executing a manipulation can lead to improper validation of unsafe equivalence in input. The attack may be launched remotely. The exploit has been published and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
SSVC
Exploitation: poc Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-01 14:09 UTC
CWE
  • CWE-1289 - Improper Validation of Unsafe Equivalence in Input
  • CWE-20 - Improper Input Validation
References
Impacted products
Vendor Product Version
Trusted Domain Project OpenDMARC Affected: 1.4.0
Affected: 1.4.1
Affected: 1.4.2
    cpe:2.3:a:trusted_domain_project:opendmarc:*:*:*:*:*:*:*:*
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CVE-2026-100837 (GCVE-0-2026-100837)

Vulnerability from cvelistv5 – Published: 2026-09-27 01:30 – Updated: 2026-09-28 13:47
VLAI
Title
Edgeless Systems Contrast through 1.20.0 Credential Leak via Registry Suffix Matching
Summary
Contrast (Edgeless Systems) through 1.20.0 performs unanchored suffix matching when selecting per-registry configuration in the imagepuller. Config.registryFor strips a single trailing dot and then uses strings.HasSuffix(hostname, fqdn) without requiring a DNS label boundary, so a registry entry such as [registries."ghcr.io."] is also applied to any host whose name merely ends in that byte sequence, including attacker-registered domains such as evilghcr.io. When an image or layer is pulled from such a sibling domain, the imagepuller sends the configured Authorization header (basic auth, registry token, or identity token), trusts the configured custom CA bundle, follows the configured mirror, and honours insecure-skip-verify (disabling TLS verification) for that host. Image integrity is not affected, as image bytes remain pinned by digest in the policy and are validated after the pull. Configurations that use a leading dot (e.g., [registries.".example.registry"]) are unaffected.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-28 13:46 UTC
CWE
  • CWE-1289 - Improper Validation of Unsafe Equivalence in Input
References
Impacted products
Vendor Product Version
edgelesssys contrast Affected: 0 , ≤ 1.20.0 (semver)
Create a notification for this product.
Date Public
2026-05-27 00:00
Credits
Show details on NVD website

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CVE-2026-97196 (GCVE-0-2026-97196)

Vulnerability from cvelistv5 – Published: 2026-09-30 06:55 – Updated: 2026-09-30 13:37 X_Open Source
VLAI
Title
WordPress GiveWP plugin <= 4.16.9 - Broken Authentication vulnerability
Summary
Improper Validation of Unsafe Equivalence in Input vulnerability in Liquid Web / StellarWP GiveWP allows Authentication Bypass. This issue affects GiveWP: from n/a through 4.16.9.
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-30 12:51 UTC
CWE
  • CWE-1289 - Improper Validation of Unsafe Equivalence in Input
References
Impacted products
Vendor Product Version
Liquid Web / StellarWP GiveWP Affected: n/a , ≤ 4.16.9 (custom)
Create a notification for this product.
Show details on NVD website

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CVE-2026-89049 (GCVE-0-2026-89049)

Vulnerability from cvelistv5 – Published: 2026-09-10 18:34 – Updated: 2026-09-10 18:57
VLAI
Title
Server-side request forgery in the Session Manager port forwarding functionality in AWS Systems Manager Agent
Summary
A server-side request forgery issue due to improper validation of equivalent address representations in the port forwarding to remote hosts functionality in Amazon AWS Systems Manager Agent (SSM Agent) before 3.3.4851.0 on all platforms might allow an authenticated remote user to bypass the remote destination denylist and reach link-local endpoints, potentially obtaining the temporary IAM role credentials of a managed instance and acting with that role's permissions from outside the instance, via a crafted destination host value that uses an alternate representation of a denied link-local address. To remediate this issue, users should upgrade to version 3.3.4851.0 or later.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-10 18:57 UTC
CWE
  • CWE-918 - Server-Side request forgery (SSRF)
  • CWE-1289 - Improper validation of unsafe equivalence in input
Impacted products
Vendor Product Version
AWS Amazon SSM Agent Affected: 0 , < 3.3.4851.0 (custom)
    cpe:2.3:a:aws:amazon_ssm_agent:*:*:*:*:*:*:*:*
Create a notification for this product.
Show details on NVD website

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CVE-2026-88255 (GCVE-0-2026-88255)

Vulnerability from cvelistv5 – Published: 2026-09-16 08:24 – Updated: 2026-09-16 14:49
VLAI
Title
mpp Tempo keys its pre-broadcast dedup reserve on the caller-supplied transaction encoding, so a re-encoded signed transaction reserves a second slot
Summary
Improper Validation of Unsafe Equivalence in Input in ZenHive mpp allows an unauthenticated remote client to pass the Tempo duplicate-submission gate twice with one signed transaction. MPP.Methods.Tempo reserves the pre-broadcast dedup slot on the caller-supplied hex in reserve_hash_atomic/2, keyed through store_key/1 on tx.raw rather than on a canonical form of the transaction. The deserializer stores the caller's hex verbatim and accepts both recovery-id encodings, so one signed transaction submitted once with v=27 and once with v=0 yields two distinct reserve keys, and both pass the reserve and reach the broadcast path. The plug-level credential replay store is deliberately carved out for tempo in lib/mpp/replay.ex, leaving this reserve as the only gate, and the post-broadcast mark writes the canonical hash key that the raw-keyed reserve never reads. What the duplicate submission yields depends on the node: a nonce-reuse rejection fails closed, while a node that answers with the canonical hash for an already-known transaction returns a second valid Payment-Receipt for a single on-chain payment. This issue affects mpp: from 0.2.0 before 0.16.2.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-16 14:49 UTC
CWE
  • CWE-1289 - Improper Validation of Unsafe Equivalence in Input
Impacted products
Vendor Product Version
ZenHive mpp Affected: 0.2.0 , < 0.16.2 (semver)
    cpe:2.3:a:ZenHive:mpp:*:*:*:*:*:*:*:*
Create a notification for this product.
ZenHive mpp Affected: f8904666061fbab695874856d8fcd02c471dfe1b , < e12bd4a1cea2e97c2a01fc059c48e5594a7b4a43 (git)
    cpe:2.3:a:ZenHive:mpp:*:*:*:*:*:*:*:*
Create a notification for this product.
Show details on NVD website

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CVE-2026-86831 (GCVE-0-2026-86831)

Vulnerability from cvelistv5 – Published: 2026-09-16 19:49 – Updated: 2026-09-17 16:08
VLAI
Title
Improper validation of pod identifier uniqueness in aws-network-policy-agent in Amazon EKS
Summary
Improper validation of pod identifier uniqueness in aws-network-policy-agent in Amazon EKS Network Policy Agent before v1.4.0 might allow an authenticated remote user to bypass NetworkPolicy enforcement on co-located pods in other namespaces via crafted pod and namespace names that produce pod identifier collisions. To remediate this issue, users should upgrade to Amazon EKS Network Policy Agent 1.4.0 or later and Amazon VPC CNI Managed Add-on v1.22.4 or later (which includes Network Policy Agent v1.4.0).
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-17 16:08 UTC
CWE
  • CWE-1289 - Improper validation of unsafe equivalence in input
Impacted products
Vendor Product Version
AWS aws-network-policy-agent Affected: 0 , < 1.4.0 (custom)
    cpe:2.3:a:aws:aws-network-policy-agent:*:*:*:*:*:*:*:*
Create a notification for this product.
AWS amazon-vpc-cni-k8s Affected: 1.14.0 , < 1.22.4 (custom)
    cpe:2.3:a:aws:amazon-vpc-cni-k8s:*:*:*:*:*:*:*:*
Create a notification for this product.
Show details on NVD website

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CVE-2026-76977 (GCVE-0-2026-76977)

Vulnerability from cvelistv5 – Published: 2026-09-08 00:13 – Updated: 2026-09-08 10:34
VLAI
Title
Clickjacking vulnerability in SAPUI5(Frame Options Allowlist)
Summary
SAP UI5 does not sufficiently validate the parent frame's origin against the configured allowlist. An unauthenticated attacker could host a malicious page to bypass framing restrictions. If an authenticated victim visits the attacker's page and interacts with it, the attacker could trick the victim into performing unintended actions, resulting in a low impact on integrity. There is no impact on confidentiality and availability.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-08 10:05 UTC
CWE
  • CWE-1289 - Improper Validation of Unsafe Equivalence in Input
Impacted products
Vendor Product Version
SAP_SE SAPUI5(Frame Options Allowlist) Affected: SAP_UI 750
Affected: 754
Affected: 755
Affected: 756
Affected: 757
Affected: 758
Affected: 816
Affected: UI_700 200
Create a notification for this product.
Show details on NVD website

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Mitigation MIT-5
Implementation

Strategy: Input Validation

  • Assume all input is malicious. Use an "accept known good" input validation strategy, i.e., use a list of acceptable inputs that strictly conform to specifications. Reject any input that does not strictly conform to specifications, or transform it into something that does.
  • When performing input validation, consider all potentially relevant properties, including length, type of input, the full range of acceptable values, missing or extra inputs, syntax, consistency across related fields, and conformance to business rules. As an example of business rule logic, "boat" may be syntactically valid because it only contains alphanumeric characters, but it is not valid if the input is only expected to contain colors such as "red" or "blue."
  • Do not rely exclusively on looking for malicious or malformed inputs. This is likely to miss at least one undesirable input, especially if the code's environment changes. This can give attackers enough room to bypass the intended validation. However, denylists can be useful for detecting potential attacks or determining which inputs are so malformed that they should be rejected outright.

No CAPEC attack patterns related to this CWE.