Common Weakness Enumeration

CWE-597

Weakness Allowed

Use of Wrong Operator in String Comparison

Abstraction: Variant · Status: Draft

API response cwe.mitre.org

The product uses the wrong operator when comparing a string, such as using "==" when the .equals() method should be used instead.

Mapping guidance

This CWE entry is at the Variant level of abstraction, which is a preferred level of abstraction for mapping to the root causes of vulnerabilities.

Carefully read both the name and description to ensure that this mapping is an appropriate fit. Do not try to 'force' a mapping to a lower-level Base/Variant simply to comply with this preferred level of abstraction.

Relationships and members
ChildOf: CWE-595 · View CWE-1000
ChildOf: CWE-595 · View CWE-1305
ChildOf: CWE-480 · View CWE-1000
Modes of introduction
Implementation
Detection methods

Automated Static Analysis

Automated static analysis, commonly referred to as Static Application Security Testing (SAST), can find some instances of this weakness by analyzing source code (or binary/compiled code) without having to execute it. Typically, this is done by building a model of data flow and control flow, then searching for potentially-vulnerable patterns that connect "sources" (origins of input) with "sinks" (destinations where the data interacts with external components, a lower layer such as the OS, etc.)

Effectiveness: High

Content history
Submission: CWE Content Team · MITRE · 2006-12-15 · CWE Draft 5
Modification: Eric Dalci · Cigital · 2008-07-01 · CWE 1.0

updated Potential_Mitigations, Time_of_Introduction

Modification: CWE Content Team · MITRE · 2008-09-08 · CWE 1.0

updated Description, Relationships

Modification: CWE Content Team · MITRE · 2008-10-14 · CWE 1.0.1

updated Relationships

Modification: CWE Content Team · MITRE · 2009-05-27 · CWE 1.4

updated Demonstrative_Examples

Modification: CWE Content Team · MITRE · 2011-03-29 · CWE 1.12

updated Demonstrative_Examples, Description, Potential_Mitigations

Modification: CWE Content Team · MITRE · 2011-06-01 · CWE 1.13

updated Common_Consequences, Relationships, Taxonomy_Mappings

Modification: CWE Content Team · MITRE · 2012-05-11 · CWE 2.2

updated Demonstrative_Examples, References, Relationships, Taxonomy_Mappings

Modification: CWE Content Team · MITRE · 2014-07-30 · CWE 2.8

updated Relationships, Taxonomy_Mappings

Modification: CWE Content Team · MITRE · 2017-11-08 · CWE 3.0

updated Taxonomy_Mappings

Modification: CWE Content Team · MITRE · 2019-01-03 · CWE 3.2

updated Relationships, Taxonomy_Mappings

Modification: CWE Content Team · MITRE · 2020-02-24 · CWE 4.0

updated Relationships

Modification: CWE Content Team · MITRE · 2020-08-20 · CWE 4.2

updated Relationships

Modification: CWE Content Team · MITRE · 2021-03-15 · CWE 4.4

updated Demonstrative_Examples, Description, Potential_Mitigations, Relationships

Modification: CWE Content Team · MITRE · 2023-04-27 · CWE 4.11

updated Detection_Factors, Relationships

Modification: CWE Content Team · MITRE · 2023-06-29 · CWE 4.12

updated Mapping_Notes

Modification: CWE Content Team · MITRE · 2025-04-03 · CWE 4.17

updated Demonstrative_Examples

Modification: CWE Content Team · MITRE · 2025-12-11 · CWE 4.19

updated Applicable_Platforms, Weakness_Ordinalities

Modification: CWE Content Team · MITRE · 2026-10-28 · CWE 5.0

updated Background_Details, Common_Consequences, Description, References

4 vulnerabilities reference this CWE, most recent first.

CVE-2022-36072 (GCVE-0-2022-36072)

Vulnerability from cvelistv5 – Published: 2022-09-06 20:45 – Updated: 2025-04-23 17:14
VLAI
Title
SilverwareGames.io used == for hashing instead of ===
Summary
SilverwareGames.io is a social network for users to play video games online. In version 1.1.8 and prior, due to an unobvious feature of PHP, hashes generated by built-in functions and starting with the `0e` symbols were being handled as zero multiplied with the `e` number. Therefore, the hash value was equal to 0. The maintainers fixed this in version 1.1.9 by using `===` instead of `==` in comparisons where it is possible (e.g. on sign in/sign up handlers).
Severity
5.9 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-04-23 14:01 UTC
CWE
  • CWE-597 - Use of Wrong Operator in String Comparison
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7763 records in the last 180 days details
References
Impacted products
Show details on NVD website
To clipboard 

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CVE-2021-4259 (GCVE-0-2021-4259)

Vulnerability from cvelistv5 – Published: 2022-12-19 00:00 – Updated: 2024-08-03 17:23
VLAI
Title
phpRedisAdmin login.inc.php authHttpDigest wrong operator in string comparison
Summary
A vulnerability was found in phpRedisAdmin up to 1.16.1. It has been classified as problematic. This affects the function authHttpDigest of the file includes/login.inc.php. The manipulation of the argument response leads to use of wrong operator in string comparison. Upgrading to version 1.16.2 is able to address this issue. The name of the patch is 31aa7661e6db6f4dffbf9a635817832a0a11c7d9. It is recommended to upgrade the affected component. The associated identifier of this vulnerability is VDB-216267.
Severity
5 (Medium)
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
5 (Medium)
CVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
CWE
  • CWE-597 - Use of Wrong Operator in String Comparison
Assigner
VulDB CNA under the mitre root
CNA scorecard B 83/100 over 3860 records in the last 180 days details
References
Impacted products
Vendor Product Version
n/a phpRedisAdmin Affected: 1.16.0
Affected: 1.16.1
Show details on NVD website
To clipboard 

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CVE-2021-3797 (GCVE-0-2021-3797)

Vulnerability from cvelistv5 – Published: 2021-09-15 13:05 – Updated: 2024-08-03 17:09
VLAI
Title
Use of Wrong Operator in String Comparison in hestiacp/hestiacp
Summary
hestiacp is vulnerable to Use of Wrong Operator in String Comparison
Severity
4.8 (Medium)
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
CWE
  • CWE-597 - Use of Wrong Operator in String Comparison
Assigner
@huntrdev CNA
CNA scorecard – unranked: 0 records in the last 180 days, 10 needed details
References
Impacted products
Vendor Product Version
hestiacp hestiacp/hestiacp Affected: unspecified , ≤ 1.4.13 (custom)
Create a notification for this product.
Show details on NVD website
To clipboard 

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                  "value": "CWE-597 Use of Wrong Operator in String Comparison"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://huntr.dev/bounties/c24fb15c-3c84-45c8-af04-a660f8da388f",
              "refsource": "CONFIRM",
              "url": "https://huntr.dev/bounties/c24fb15c-3c84-45c8-af04-a660f8da388f"
            },
            {
              "name": "https://github.com/hestiacp/hestiacp/commit/fc68baff4f94b59e38316f886d0ce47d337042f7",
              "refsource": "MISC",
              "url": "https://github.com/hestiacp/hestiacp/commit/fc68baff4f94b59e38316f886d0ce47d337042f7"
            }
          ]
        },
        "source": {
          "advisory": "c24fb15c-3c84-45c8-af04-a660f8da388f",
          "discovery": "EXTERNAL"
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "c09c270a-b464-47c1-9133-acb35b22c19a",
    "assignerShortName": "@huntrdev",
    "cveId": "CVE-2021-3797",
    "datePublished": "2021-09-15T13:05:11.000Z",
    "dateReserved": "2021-09-12T00:00:00.000Z",
    "dateUpdated": "2024-08-03T17:09:08.816Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

GHSA-GMG9-6627-CRJH

Vulnerability from github – Published: 2022-12-19 15:30 – Updated: 2022-12-27 18:30
VLAI
Details

A vulnerability was found in phpRedisAdmin up to 1.17.3. It has been classified as problematic. This affects the function authHttpDigest of the file includes/login.inc.php. The manipulation of the argument response leads to use of wrong operator in string comparison. The name of the patch is 31aa7661e6db6f4dffbf9a635817832a0a11c7d9. It is recommended to apply a patch to fix this issue. The associated identifier of this vulnerability is VDB-216267.

Severity
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Show details on source website
To clipboard 

{
  "affected": [],
  "aliases": [
    "CVE-2021-4259"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-597"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2022-12-19T14:15:00Z",
    "severity": "CRITICAL"
  },
  "details": "A vulnerability was found in phpRedisAdmin up to 1.17.3. It has been classified as problematic. This affects the function authHttpDigest of the file includes/login.inc.php. The manipulation of the argument response leads to use of wrong operator in string comparison. The name of the patch is 31aa7661e6db6f4dffbf9a635817832a0a11c7d9. It is recommended to apply a patch to fix this issue. The associated identifier of this vulnerability is VDB-216267.",
  "id": "GHSA-gmg9-6627-crjh",
  "modified": "2022-12-27T18:30:20Z",
  "published": "2022-12-19T15:30:29Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-4259"
    },
    {
      "type": "WEB",
      "url": "https://github.com/erikdubbelboer/phpRedisAdmin/commit/31aa7661e6db6f4dffbf9a635817832a0a11c7d9"
    },
    {
      "type": "WEB",
      "url": "https://github.com/erikdubbelboer/phpRedisAdmin/releases/tag/v1.16.2"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/?id.216267"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}
Mitigation
Implementation
  • Within Java, use .equals() to compare string values.
  • Within JavaScript, use == to compare string values.
  • Within PHP, use == to compare a numeric value to a string value. (PHP converts the string to a number.)

No CAPEC attack patterns related to this CWE.

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