CVE-2026-27193

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Source
https://cve.org/CVERecord?id=CVE-2026-27193
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-27193.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-27193
Aliases
Published
2026-02-21T04:09:06.855Z
Modified
2026-03-03T02:56:18.332832Z
Severity
  • 8.2 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N CVSS Calculator
Summary
Feathers exposes internal headers via unencrypted session cookie
Details

Feathersjs is a framework for creating web APIs and real-time applications with TypeScript or JavaScript. In versions 5.0.39 and below, all HTTP request headers are stored in the session cookie, which is signed but not encrypted, exposing internal proxy/gateway headers to clients. The OAuth service stores the complete headers object in the session, then the session is persisted using cookie-session, which base64-encodes the data. While the cookie is signed to prevent tampering, the contents are readable by anyone by simply decoding the base64 value. Under specific deployment configurations (e.g., behind reverse proxies or API gateways), this can lead to exposure of sensitive internal infrastructure details such as API keys, service tokens, and internal IP addresses. This issue has been fixed in version 5.0.40.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/27xxx/CVE-2026-27193.json",
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-200"
    ]
}
References

Affected packages

Git / github.com/feathersjs/feathers

Affected ranges

Type
GIT
Repo
https://github.com/feathersjs/feathers
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
f71178917bf5d38f2591c412b0f6edc69f211ee8

Affected versions

0.*
0.0.2
0.0.3
0.0.4
0.1.0
0.2.0
0.3.0
0.3.1
0.3.2
0.4.0
1.*
1.0.0
1.0.0-pre.1
1.0.0-pre.5
1.0.1
1.0.2
1.1.0-pre.0
@feathersjs/adapter-commons@1.*
@feathersjs/adapter-commons@1.0.0
@feathersjs/adapter-commons@1.0.1
@feathersjs/adapter-commons@1.0.2
@feathersjs/adapter-commons@1.0.3
@feathersjs/adapter-commons@1.0.4
@feathersjs/adapter-commons@1.0.5
@feathersjs/adapter-commons@1.0.6
@feathersjs/adapter-commons@1.0.7
@feathersjs/adapter-commons@2.*
@feathersjs/adapter-commons@2.0.0
@feathersjs/adapter-tests@1.*
@feathersjs/adapter-tests@1.0.0
@feathersjs/adapter-tests@1.0.1
@feathersjs/authentication-client@1.*
@feathersjs/authentication-client@1.0.10
@feathersjs/authentication-client@1.0.11
@feathersjs/authentication-client@1.0.3
@feathersjs/authentication-client@1.0.4
@feathersjs/authentication-client@1.0.5
@feathersjs/authentication-client@1.0.6
@feathersjs/authentication-client@1.0.7
@feathersjs/authentication-client@1.0.8
@feathersjs/authentication-client@1.0.9
@feathersjs/authentication-jwt@2.*
@feathersjs/authentication-jwt@2.0.10
@feathersjs/authentication-jwt@2.0.2
@feathersjs/authentication-jwt@2.0.3
@feathersjs/authentication-jwt@2.0.4
@feathersjs/authentication-jwt@2.0.5
@feathersjs/authentication-jwt@2.0.6
@feathersjs/authentication-jwt@2.0.7
@feathersjs/authentication-jwt@2.0.8
@feathersjs/authentication-jwt@2.0.9
@feathersjs/authentication-local@1.*
@feathersjs/authentication-local@1.2.2
@feathersjs/authentication-local@1.2.3
@feathersjs/authentication-local@1.2.4
@feathersjs/authentication-local@1.2.5
@feathersjs/authentication-local@1.2.6
@feathersjs/authentication-local@1.2.7
@feathersjs/authentication-local@1.2.8
@feathersjs/authentication-local@1.2.9
@feathersjs/authentication-oauth1@1.*
@feathersjs/authentication-oauth1@1.0.10
@feathersjs/authentication-oauth1@1.0.4
@feathersjs/authentication-oauth1@1.0.5
@feathersjs/authentication-oauth1@1.0.6
@feathersjs/authentication-oauth1@1.0.7
@feathersjs/authentication-oauth1@1.0.8
@feathersjs/authentication-oauth1@1.0.9
@feathersjs/authentication-oauth1@1.1.0
@feathersjs/authentication-oauth1@1.1.1
@feathersjs/authentication-oauth2@1.*
@feathersjs/authentication-oauth2@1.2.1
@feathersjs/authentication-oauth2@1.2.2
@feathersjs/authentication-oauth2@1.2.3
@feathersjs/authentication-oauth2@1.2.4
@feathersjs/authentication-oauth2@1.2.5
@feathersjs/authentication-oauth2@1.2.6
@feathersjs/authentication-oauth2@1.2.7
@feathersjs/authentication-oauth2@1.3.0
@feathersjs/authentication-oauth2@1.3.1
@feathersjs/authentication@2.*
@feathersjs/authentication@2.1.10
@feathersjs/authentication@2.1.11
@feathersjs/authentication@2.1.12
@feathersjs/authentication@2.1.13
@feathersjs/authentication@2.1.14
@feathersjs/authentication@2.1.15
@feathersjs/authentication@2.1.16
@feathersjs/authentication@2.1.8
@feathersjs/authentication@2.1.9
@feathersjs/cli@3.*
@feathersjs/cli@3.8.1
@feathersjs/cli@3.8.2
@feathersjs/cli@3.8.3
@feathersjs/cli@3.8.4
@feathersjs/cli@3.8.5
@feathersjs/cli@3.8.6
@feathersjs/cli@3.8.7
@feathersjs/client@3.*
@feathersjs/client@3.7.2
@feathersjs/client@3.7.3
@feathersjs/client@3.7.4
@feathersjs/client@3.7.5
@feathersjs/client@3.7.6
@feathersjs/client@3.7.7
@feathersjs/client@3.7.8
@feathersjs/commons@3.*
@feathersjs/commons@3.0.0
@feathersjs/commons@3.0.1
@feathersjs/commons@4.*
@feathersjs/commons@4.0.0
@feathersjs/configuration@2.*
@feathersjs/configuration@2.0.1
@feathersjs/configuration@2.0.2
@feathersjs/configuration@2.0.3
@feathersjs/configuration@2.0.4
@feathersjs/configuration@2.0.5
@feathersjs/configuration@2.0.6
@feathersjs/errors@3.*
@feathersjs/errors@3.3.1
@feathersjs/errors@3.3.2
@feathersjs/errors@3.3.3
@feathersjs/errors@3.3.4
@feathersjs/errors@3.3.5
@feathersjs/errors@3.3.6
@feathersjs/express@1.*
@feathersjs/express@1.2.4
@feathersjs/express@1.2.5
@feathersjs/express@1.2.6
@feathersjs/express@1.2.7
@feathersjs/express@1.3.0
@feathersjs/express@1.3.1
@feathersjs/feathers@3.*
@feathersjs/feathers@3.2.0
@feathersjs/feathers@3.2.1
@feathersjs/feathers@3.2.2
@feathersjs/feathers@3.2.3
@feathersjs/feathers@3.3.0
@feathersjs/feathers@3.3.1
@feathersjs/primus-client@1.*
@feathersjs/primus-client@1.1.1
@feathersjs/primus-client@1.1.2
@feathersjs/primus-client@1.1.3
@feathersjs/primus-client@1.1.4
@feathersjs/primus-client@1.1.5
@feathersjs/primus-client@1.1.6
@feathersjs/primus-client@1.1.7
@feathersjs/primus@3.*
@feathersjs/primus@3.2.2
@feathersjs/primus@3.2.3
@feathersjs/primus@3.2.4
@feathersjs/primus@3.2.5
@feathersjs/primus@3.2.6
@feathersjs/primus@3.2.7
@feathersjs/primus@3.2.8
@feathersjs/rest-client@1.*
@feathersjs/rest-client@1.4.2
@feathersjs/rest-client@1.4.3
@feathersjs/rest-client@1.4.4
@feathersjs/rest-client@1.4.5
@feathersjs/rest-client@1.4.6
@feathersjs/rest-client@1.4.7
@feathersjs/socketio-client@1.*
@feathersjs/socketio-client@1.1.1
@feathersjs/socketio-client@1.1.2
@feathersjs/socketio-client@1.1.3
@feathersjs/socketio-client@1.1.4
@feathersjs/socketio-client@1.1.5
@feathersjs/socketio-client@1.2.0
@feathersjs/socketio-client@1.2.1
@feathersjs/socketio@3.*
@feathersjs/socketio@3.2.3
@feathersjs/socketio@3.2.4
@feathersjs/socketio@3.2.5
@feathersjs/socketio@3.2.6
@feathersjs/socketio@3.2.7
@feathersjs/socketio@3.2.8
@feathersjs/socketio@3.2.9
@feathersjs/transport-commons@4.*
@feathersjs/transport-commons@4.1.2
@feathersjs/transport-commons@4.1.3
@feathersjs/transport-commons@4.1.4
@feathersjs/transport-commons@4.1.5
@feathersjs/transport-commons@4.1.6
@feathersjs/transport-commons@4.2.0
@feathersjs/transport-commons@4.2.1
generator-feathers-plugin@1.*
generator-feathers-plugin@1.0.1
generator-feathers@2.*
generator-feathers@2.6.1
generator-feathers@2.6.2
generator-feathers@2.6.3
generator-feathers@2.6.4
generator-feathers@2.7.0
generator-feathers@2.7.1
generator-feathers@2.8.0
v1.*
v1.1.0
v1.1.1
v1.2.0
v1.2.1
v2.*
v2.0.0
v2.0.0-pre.1
v2.0.0-pre.2
v2.0.0-pre.3
v2.0.0-pre.4
v2.0.1
v2.0.2
v2.0.3
v2.1.0
v2.1.1
v2.1.2
v2.1.3
v2.1.4
v2.1.6
v2.1.7
v2.2.0
v2.2.1
v2.2.2
v2.2.3
v3.*
v3.0.0
v3.0.1
v3.0.2
v3.0.3
v3.0.4
v3.0.5
v3.1.0
v3.1.1
v3.1.2
v3.1.3
v3.1.4
v3.1.5
v3.1.6
v3.1.7
v3.2.0-pre.1
v4.*
v4.0.0-pre.0
v4.0.0-pre.1
v4.0.0-pre.2
v4.0.0-pre.3
v4.0.0-pre.4
v4.0.0-pre.5
v4.3.0
v4.3.0-pre.1
v4.3.0-pre.2
v4.3.0-pre.3
v4.3.0-pre.4
v4.3.1
v4.3.10
v4.3.11
v4.3.2
v4.3.3
v4.3.4
v4.3.5
v4.3.6
v4.3.7
v4.3.8
v4.3.9
v4.4.0
v4.4.1
v4.4.3
v4.5.0
v4.5.1
v4.5.10
v4.5.11
v4.5.2
v4.5.3
v4.5.4
v4.5.5
v4.5.6
v4.5.7
v4.5.8
v4.5.9
v5.*
v5.0.0
v5.0.0-beta.0
v5.0.0-beta.1
v5.0.0-pre.0
v5.0.0-pre.1
v5.0.0-pre.10
v5.0.0-pre.11
v5.0.0-pre.12
v5.0.0-pre.13
v5.0.0-pre.14
v5.0.0-pre.15
v5.0.0-pre.16
v5.0.0-pre.17
v5.0.0-pre.18
v5.0.0-pre.19
v5.0.0-pre.2
v5.0.0-pre.20
v5.0.0-pre.21
v5.0.0-pre.22
v5.0.0-pre.23
v5.0.0-pre.24
v5.0.0-pre.25
v5.0.0-pre.26
v5.0.0-pre.27
v5.0.0-pre.28
v5.0.0-pre.29
v5.0.0-pre.3
v5.0.0-pre.30
v5.0.0-pre.31
v5.0.0-pre.32
v5.0.0-pre.33
v5.0.0-pre.34
v5.0.0-pre.35
v5.0.0-pre.36
v5.0.0-pre.37
v5.0.0-pre.38
v5.0.0-pre.4
v5.0.0-pre.5
v5.0.0-pre.6
v5.0.0-pre.7
v5.0.0-pre.8
v5.0.0-pre.9
v5.0.1
v5.0.10
v5.0.11
v5.0.12
v5.0.13
v5.0.14
v5.0.15
v5.0.16
v5.0.17
v5.0.18
v5.0.19
v5.0.2
v5.0.20
v5.0.21
v5.0.22
v5.0.23
v5.0.24
v5.0.25
v5.0.26
v5.0.27
v5.0.28
v5.0.29
v5.0.3
v5.0.30
v5.0.31
v5.0.32
v5.0.33
v5.0.34
v5.0.35
v5.0.36
v5.0.37
v5.0.38
v5.0.39
v5.0.4
v5.0.5
v5.0.6
v5.0.7
v5.0.8
v5.0.9

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-27193.json"