CVE-2017-10908 json
H2O version 2.2.3 and earlier allows remote attackers to cause a denial of service in the server via specially crafted HTTP/2 header.
published 2017-12-22 8 y ago modified 2026-06-17 4 mo ago also EUVD-2017-2547
- cvss
- 7.5
- version 3.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 3.6%
- EPSS 3.6% chance of exploitation in 30 days, percentile 89%
- public exploits
- 0
- none known
Summary
H2O version 2.2.3 and earlier allows remote attackers to cause a denial of service in the server via specially crafted HTTP/2 header.
Patch / fix
- h2o Debian 12 2.2.4+dfsg-1
debian advisories DEBIAN-CVE-2017-10908
Exploit prediction
3.64% chance of exploitation in the next 30 days, higher than 89% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.0 | 7.5 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:N/I:N/A:P |
Affected products
- Kazuho Oku H2O
Classification
- Weakness
-
- CWE-20 Improper Input Validation
References
-
github.com
/h2o/h2o/issues/1544
third-party-advisory
-
jvn.jp
/en/jp/JVN84182676/index.html
third-party-advisory, vdb-entry
Sources
- CVE List CVE-2017-10908
- NVD CVE-2017-10908
Fencer Vulns 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.