CVE-2026-20656 json
A logic issue was addressed with improved validation.
published 8mo ago modified 4mo ago also EUVD-2026-6234
- cvss
- 3.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.1%
- EPSS 0.1% chance of exploitation in 30 days, percentile 3%
- public exploits
- 0
- none known
Summary
A logic issue was addressed with improved validation. This issue is fixed in Safari 26.3, iOS 18.7.5 and iPadOS 18.7.5, macOS Tahoe 26.3. An app may be able to access a user's Safari history.
Patch / fix
- Apple Safari 26.3
- Apple iOS and iPadOS 18.7.5
- Apple macOS 26.3
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Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 8mo ago
Exploit prediction
0.14% chance of exploitation in the next 30 days, higher than 3% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CISA ADP | 3.1 | 3.3 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N |
| NVD | 3.1 | 3.3 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N |
| CNA | 3.1 | 3.3 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N |
Affected products
- Apple Safari
- Apple iOS and iPadOS
- Apple macOS
Classification
- Weakness
-
- CWE-285 Improper Authorization
References
-
support.apple.com
/en-us/126347
release-notes, vendor-advisory
-
support.apple.com
/en-us/126348
release-notes, vendor-advisory
-
support.apple.com
/en-us/126354
release-notes, vendor-advisory
Sources
- CVE List CVE-2026-20656
- NVD CVE-2026-20656
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.