CVE-2026-42499
HIGHCVSS 7.5/10EPSS 0.80%
Last modified
CVE-2026-42499 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. Pathological inputs could cause DoS through consumePhrase when parsing an email address according to RFC 5322.. EPSS estimates a 0.80% chance of exploitation in the next 30 days.
Description
Pathological inputs could cause DoS through consumePhrase when parsing an email address according to RFC 5322.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Golang | Go | < 1.25.10 |
| Golang | Go | >= 1.26.0, < 1.26.3 |
References
- https://go.dev/issue/78987Issue Tracking
- https://pkg.go.dev/vuln/GO-2026-4977Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2026-42499?
Pathological inputs could cause DoS through consumePhrase when parsing an email address according to RFC 5322.
How severe is CVE-2026-42499?
CVE-2026-42499 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.80% probability of exploitation in the next 30 days.
How do I fix CVE-2026-42499?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-42493Addressing certain issues, in particular related to operatio…7.5
- CVE-2026-42494[This CNA information record relates to multiple CVEs; the t…6.1
- CVE-2026-42495[This CNA information record relates to multiple CVEs; the t…5.5
- CVE-2026-42496Archive::Tar versions before 3.08 for Perl extract symlinks …9.1
- CVE-2026-42497Archive::Tar versions before 3.08 for Perl extract hardlinks…7.5
- CVE-2026-42498Exposure of HTTP Authentication Header to unexpected hosts d…7.3
- CVE-2026-4250A vulnerability was found in Albert Sağlık Hizmetleri ve Tic…2.5
- CVE-2026-42500Decoding a paletted BMP file with an out-of-range palette in…5.3
- CVE-2026-42501A malicious module proxy can exploit a flaw in the go comman…7.5
- CVE-2026-42502Parsing arbitrary HTML which is then rendered using Render c…6.1
- CVE-2026-42503gopls by default communicates via pipe. However, -port and -…8.8
- CVE-2026-42504Decoding a maliciously-crafted MIME header containing many i…7.5
Are you affected by CVE-2026-42499?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST