HOMEVULNERABILITIESCVE-2019-16771
MEDIUM

CVE-2019-16771

CWE-113Published: December 6, 2019· Updated: Jun 17, 2026

6.5
CVSS v3.1

Official Description

Versions of Armeria 0.85.0 through and including 0.96.0 are vulnerable to HTTP response splitting, which allows remote attackers to inject arbitrary HTTP headers via CRLF sequences when unsanitized data is used to populate the headers of an HTTP response. This vulnerability has been patched in 0.97.0. Potential impacts of this vulnerability include cross-user defacement, cache poisoning, Cross-site scripting (XSS), and page hijacking.

NVD Source

Technical Analysis

CVE-2019-16771 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityLow
IntegrityLow
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Affected Vendors & Products

linecorp1 product(s)
armeria
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://github.com/line/armeria/commit/b597f7a865a527a84ee3d6937075cfbb4470ed20
PATCHhttps://github.com/line/armeria/commit/b597f7a865a527a84ee3d6937075cfbb4470ed20
ADVISORYhttps://github.com/line/armeria/security/advisories/GHSA-35fr-h7jr-hh86
ADVISORYhttps://github.com/line/armeria/security/advisories/GHSA-35fr-h7jr-hh86

All References (4)

→
https://github.com/line/armeria/commit/b597f7a865a527a84ee3d6937075cfbb4470ed20Patch · Vendor Advisory
→
https://github.com/line/armeria/security/advisories/GHSA-35fr-h7jr-hh86Mailing List · Third Party Advisory
→
https://github.com/line/armeria/commit/b597f7a865a527a84ee3d6937075cfbb4470ed20Patch · Vendor Advisory
→
https://github.com/line/armeria/security/advisories/GHSA-35fr-h7jr-hh86Mailing List · Third Party Advisory

Quick Facts

CVE IDCVE-2019-16771
CVSS Score6.5 / 10
SeverityMEDIUM
WeaknessCWE-113
CISA KEVNo
Affected1 vendor(s)
PublishedDec 6, 2019

Related CVEs (CWE-113)

CVE-2019-25101
9.8
CVE-2026-34520
9.1
CVE-2025-53007
8.9
CVE-2021-40336
8.8
CVE-2018-0689
8.8
CVE-2018-13814
8.8

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2019-16771 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
← All Vulnerabilities·Search for CVE-2019-16771·NVD