Vulnerability-Lookup

GHSA-8J98-Q77Q-PMV2

Vulnerability from github – Published: 2026-09-10 12:31 – Updated: 2026-09-10 12:31

Details

A flaw was found in Evolution. A remote attacker can exploit this vulnerability by sending a specially crafted HTML email containing a spoofed vCard control. When a victim clicks on this control, Evolution's trusted JavaScript handler incorrectly assigns an attacker-controlled JavaScript URL to an iframe's source. This action leads to arbitrary JavaScript execution within the mail-viewing context, effectively bypassing the security measures designed to prevent script execution in email content.

Severity

5.4 (Medium)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

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  "affected": [],
  "aliases": [
    "CVE-2026-88859"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-84"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-10T12:16:33Z",
    "severity": "MODERATE"
  },
  "details": "A flaw was found in Evolution. A remote attacker can exploit this vulnerability by sending a specially crafted HTML email containing a spoofed vCard control. When a victim clicks on this control, Evolution\u0027s trusted JavaScript handler incorrectly assigns an attacker-controlled JavaScript URL to an iframe\u0027s source. This action leads to arbitrary JavaScript execution within the mail-viewing context, effectively bypassing the security measures designed to prevent script execution in email content.",
  "id": "GHSA-8j98-q77q-pmv2",
  "modified": "2026-09-10T12:31:20Z",
  "published": "2026-09-10T12:31:20Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-88859"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/security/cve/CVE-2026-88859"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2531401"
    },
    {
      "type": "WEB",
      "url": "https://gitlab.gnome.org/GNOME/evolution/-/work_items/3388"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-88859 (GCVE-0-2026-88859)

Vulnerability from cvelistv5 – Published: 2026-09-10 11:24 – Updated: 2026-09-10 15:04

Title

Evolution: evolution: javascript execution via spoofed vcard control bypasses mail script-markup restriction

Summary

Severity

6.3 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-10 11:37 UTC

CWE

CWE-84 - Improper Neutralization of Encoded URI Schemes in a Web Page

Assigner

redhat redhat root

References

3 references

URL	Tags
https://access.redhat.com/security/cve/CVE-2026-88859	vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2531401	issue-trackingx_refsource_REDHAT
https://gitlab.gnome.org/GNOME/evolution/-/work_i…

Impacted products

4 products

Vendor	Product	Version
Red Hat	Red Hat Enterprise Linux 6	cpe:/o:redhat:enterprise_linux:6
Red Hat	Red Hat Enterprise Linux 7	cpe:/o:redhat:enterprise_linux:7
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

Date Public

2026-09-10 11:00

Credits

Red Hat would like to thank Jurre van Bergen for reporting this issue.

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JSON

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                "id": "CVE-2026-88859",
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                  },
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                    "Technical Impact": "partial"
                  }
                ],
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                "timestamp": "2026-09-10T11:37:05.635064Z",
                "version": "2.0.3"
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          "product": "Red Hat Enterprise Linux 6",
          "vendor": "Red Hat"
        },
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              "namespace": "https://access.redhat.com/security/updates/classification/",
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            "confidentialityImpact": "LOW",
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        },
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          "lang": "en",
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        }
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    "dateReserved": "2026-09-10T10:42:51.932Z",
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    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

Action not permitted

GHSA-8J98-Q77Q-PMV2

CVE-2026-88859 (GCVE-0-2026-88859)

Tags

Sightings

Nomenclature