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Fencer Intel
medium 6.5

CVE-2020-6858 json

HTTP Response Splitting in Styx

published 6y ago modified 4mo ago also GHSA-6v7p-v754-j89v , EUVD-2020-0336

cvss
6.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.2%
EPSS 1.2% chance of exploitation in 30 days, percentile 67%
public exploits
0
none known

Summary

Hotels Styx through 1.0.0.beta8 allows HTTP response splitting due to CRLF Injection. This is exploitable if untrusted user input can appear in a response header.

Patch / fix

  • maven com.hotels.styx:styx-api 1.0.0-rc1

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Exploit prediction

1.16% chance of exploitation in the next 30 days, higher than 67% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • github.com https://github.com/HotelsDotCom/styx/security/advisories/GHSA-6v7p-v754-j89v referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:P/A:N
GitHub 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

Affected packages

ecosystem package affected fixed in
maven com.hotels.styx:styx-api
<1.0.0-rc1
1.0.0-rc1

Classification

Weakness
  • CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component

References

Sources

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.