Vulnerability-Lookup

CVE-2026-24824 (GCVE-0-2026-24824)

Vulnerability from cvelistv5 – Published: 2026-01-27 09:01 – Updated: 2026-01-27 16:58

Title

A XSS in yacy/yacy_search_server

Summary

Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in yacy yacy_search_server (source/net/yacy/http/servlets modules). This vulnerability is associated with program files YaCyDefaultServlet.Java. This issue affects yacy_search_server.

Severity

6.9 (Medium)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N/AU:Y/R:U/V:D/RE:M/U:Amber

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-01-27 16:58 UTC

CWE

CWE-79 - Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting')

Assigner

GovTech CSG

References

1 reference

URL	Tags
https://github.com/yacy/yacy_search_server/pull/722	patch

Impacted products

1 product

Vendor	Product	Version	CPE status
yacy	yacy_search_server	Affected: 0 , ≤ 1.92 (git)	guessed

Credits

TITAN Team (titancaproject@gmail.com)

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-24824

Vulnerability from fkie_nvd - Published: 2026-01-27 09:15 - Updated: 2026-06-17 10:23

Severity

6.9 (Medium) - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N/AU:Y/R:U/V:D/RE:M/U:Amber

Summary

References

	URL	Tags
	cve_disclosure@tech.gov.sg	https://github.com/yacy/yacy_search_server/pull/722

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "collectionURL": "https://github.com/yacy/yacy_search_server",
          "defaultStatus": "affected",
          "modules": [
            "source/net/yacy/http/servlets"
          ],
          "product": "yacy_search_server",
          "programFiles": [
            "YaCyDefaultServlet.java"
          ],
          "vendor": "yacy",
          "versions": [
            {
              "lessThanOrEqual": "1.92",
              "status": "affected",
              "version": "0",
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            }
          ]
        }
      ],
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    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Improper Neutralization of Input During Web Page Generation (XSS or \u0027Cross-site Scripting\u0027) vulnerability in yacy yacy_search_server (source/net/yacy/http/servlets modules). This vulnerability is associated with program files YaCyDefaultServlet.Java.\n\nThis issue affects yacy_search_server."
    },
    {
      "lang": "es",
      "value": "Vulnerabilidad de neutralizaci\u00f3n Inadecuada de Entrada Durante la Generaci\u00f3n de P\u00e1ginas Web (XSS o \u0027cross-site scripting\u0027) en yacy yacy_search_server (m\u00f3dulos source/net/yacy/HTTP/servlets). Esta vulnerabilidad est\u00e1 asociada con los archivos de programa YaCyDefaultServlet.Java.\n\nEste problema afecta a yacy_search_server."
    }
  ],
  "id": "CVE-2026-24824",
  "lastModified": "2026-06-17T10:23:39.397",
  "metrics": {
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "YES",
          "Recovery": "USER",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "attackVector": "NETWORK",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 6.9,
          "baseSeverity": "MEDIUM",
          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
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}

GHSA-49V6-P72M-P687

Vulnerability from github – Published: 2026-01-27 09:30 – Updated: 2026-01-27 09:30

Details

This issue affects yacy_search_server.

Severity

6.9 (Medium)


                  
                    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N/AU:Y/R:U/V:D/RE:M/U:Amber

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-24824"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-79"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-01-27T09:15:53Z",
    "severity": "MODERATE"
  },
  "details": "Improper Neutralization of Input During Web Page Generation (XSS or \u0027Cross-site Scripting\u0027) vulnerability in yacy yacy_search_server (source/net/yacy/http/servlets modules). This vulnerability is associated with program files YaCyDefaultServlet.Java.\n\nThis issue affects yacy_search_server.",
  "id": "GHSA-49v6-p72m-p687",
  "modified": "2026-01-27T09:30:31Z",
  "published": "2026-01-27T09:30:31Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-24824"
    },
    {
      "type": "WEB",
      "url": "https://github.com/yacy/yacy_search_server/pull/722"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:Y/R:U/V:D/RE:M/U:Amber",
      "type": "CVSS_V4"
    }
  ]
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

CVE-2026-24824 (GCVE-0-2026-24824)

FKIE_CVE-2026-24824

GHSA-49V6-P72M-P687

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Related by attack behaviour