VulnerabilityPublished 26 Oct 2026

CVE-2026-86877: A path traversal issue was addressed with improved path validation

Source GCVE Database

Authoritative record:CVE-2026-86877· High

Not known to be exploited : upgrade to 27 soon.

Data as of 26 Oct 2026, 22:44 UTC

Severity

High

Rated High by Threat Radar's AI analysis · CVSS not yet scored by NVD

Patch: Available – fixed in 27

Exploitation evidence

Disclosed: evidence found.
CVE published 26 Oct 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

ghsa-wxh9-4m39-q777

What to do

Upgrade macOS to 27.

Affected software

Product	Affected	Fixed in
ApplemacOS	Affected <27	Fixed in 27

AI-suggested

Apply the official fix by updating to macOS Golden Gate 27, where the vulnerability has been addressed with improved path validation.

Description

A path traversal vulnerability in macOS Golden Gate 27 was addressed by improving path validation. This flaw could allow a malicious application to delete files without having the necessary privileges. The issue is fixed in macOS Golden Gate 27.

Impact

A malicious application could exploit this vulnerability to delete files for which it does not have privileges, potentially leading to data loss or system instability.

Summary

CVE-2026-86877 is a path traversal vulnerability that was mitigated by enhanced path validation in macOS Golden Gate 27. The vulnerability could have allowed a malicious app to delete files beyond its privilege scope. The fix is implemented in macOS Golden Gate 27, preventing unauthorized file deletion via path traversal.

References

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