CVE-2026-19931
ADVISORY - nistSummary
A flaw in libcurl makes it wrongly reuse an HTTP connection setup for a given hostname using Negotiate authentication, when the initial request is done using empty credentials. This can make user B's request get sent over user A's previously authenticated connection.
EPSS Score: 0.00747 (0.536)
Common Weakness Enumeration (CWE)
ADVISORY - nist
Exposure of Data Element to Wrong Session
Alpine
CREATED
UPDATED
ADVISORY IDCVE-2026-19931
EXPLOITABILITY SCORE
-
EXPLOITS FOUND
-
COMMON WEAKNESS ENUMERATION (CWE)-
| Package | Type | OS Name | OS Version | Affected Ranges | Fix Versions |
|---|---|---|---|---|---|
| alpine/curl | apk | alpine | 3.24 | <8.22.0-r0 | 8.22.0-r0 |
| alpine/curl | apk | alpine | 3.22 | <=7.65.0-r0 | Not yet available |
| alpine/curl | apk | alpine | 3.22 | <=7.66.0-r0 | Not yet available |
| alpine/curl | apk | alpine | 3.22 | <=7.71.0-r0 | Not yet available |
| alpine/curl | apk | alpine | 3.22 | <=7.72.0-r0 | Not yet available |
| alpine/curl | apk | alpine | 3.22 | <=7.74.0-r0 | Not yet available |
| alpine/curl | apk | alpine | 3.22 | <=7.76.0-r0 | Not yet available |
| alpine/curl | apk | alpine | 3.22 | <=7.77.0-r0 | Not yet available |
| alpine/curl | apk | alpine | 3.22 | <=7.78.0-r0 | Not yet available |
| alpine/curl | apk | alpine | 3.22 | <=7.79.0-r0 | Not yet available |
| alpine/curl | apk | alpine | 3.22 | <=7.83.0-r0 | Not yet available |
| alpine/curl | apk | alpine | 3.22 | <=7.83.1-r0 | Not yet available |
| alpine/curl | apk | alpine | 3.22 | <=7.84.0-r0 | Not yet available |
| alpine/curl | apk | alpine | 3.22 | <=7.85.0-r0 | Not yet available |
| alpine/curl | apk | alpine | 3.22 | <=7.86.0-r0 | Not yet available |
| alpine/curl | apk | alpine | 3.22 | <=7.87.0-r0 | Not yet available |
| alpine/curl | apk | alpine | 3.22 | <=7.88.0-r0 | Not yet available |
| alpine/curl | apk | alpine | 3.22 | <=8.0.0-r0 | Not yet available |
| alpine/curl | apk | alpine | 3.22 | <=8.1.0-r0 | Not yet available |
| alpine/curl | apk | alpine | 3.22 | <=8.10.0-r0 | Not yet available |
| alpine/curl | apk | alpine | 3.22 | <=8.11.0-r0 | Not yet available |
| alpine/curl | apk | alpine | 3.22 | <=8.11.1-r0 | Not yet available |
| alpine/curl | apk | alpine | 3.22 | <=8.12.0-r0 | Not yet available |
| alpine/curl | apk | alpine | 3.22 | <=8.14.0-r0 | Not yet available |
| alpine/curl | apk | alpine | 3.22 | <=8.14.1-r0 | Not yet available |
| alpine/curl | apk | alpine | 3.22 | <=8.14.1-r1 | Not yet available |
| alpine/curl | apk | alpine | 3.22 | <=8.14.1-r2 | Not yet available |
| alpine/curl | apk | alpine | 3.22 | <=8.14.1-r3 | Not yet available |
| alpine/curl | apk | alpine | 3.22 | <=8.3.0-r0 | Not yet available |
| alpine/curl | apk | alpine | 3.22 | <=8.4.0-r0 | Not yet available |
| alpine/curl | apk | alpine | 3.22 | <=8.5.0-r0 | Not yet available |
| alpine/curl | apk | alpine | 3.22 | <=8.6.0-r0 | Not yet available |
| alpine/curl | apk | alpine | 3.22 | <=8.7.1-r0 | Not yet available |
| alpine/curl | apk | alpine | 3.22 | <=8.9.0-r0 | Not yet available |
| alpine/curl | apk | alpine | 3.22 | <=8.9.1-r0 | Not yet available |
| alpine/curl | apk | alpine | edge | <8.22.0-r0 | 8.22.0-r0 |
| alpine/curl | apk | alpine | 3.23 | <8.22.0-r0 | 8.22.0-r0 |
Severity and metrics
No CVSS data available from this advisory.
NIST
CREATED
UPDATED
ADVISORY IDCVE-2026-19931
EXPLOITABILITY SCORE
3.9
EXPLOITS FOUND
COMMON WEAKNESS ENUMERATION (CWE)
CVSS SCORE
9.8criticalDebian
CREATED
UPDATED
ADVISORY IDCVE-2026-19931
EXPLOITABILITY SCORE
-
EXPLOITS FOUND
-
COMMON WEAKNESS ENUMERATION (CWE)-
Ubuntu
CREATED
UPDATED
ADVISORY IDCVE-2026-19931
EXPLOITABILITY SCORE
-
EXPLOITS FOUND
-
COMMON WEAKNESS ENUMERATION (CWE)-
CVSS SCORE
N/AmediumChainguard
CREATED
UPDATED
ADVISORY ID
CGA-4xcx-q4x8-3mw9
EXPLOITABILITY SCORE
-
EXPLOITS FOUND
-
COMMON WEAKNESS ENUMERATION (CWE)-
Photon
CREATED
UPDATED
ADVISORY ID
CVE-2026-19931
EXPLOITABILITY SCORE
-
EXPLOITS FOUND
-
COMMON WEAKNESS ENUMERATION (CWE)-
CVSS SCORE
9.8criticalminimos
CREATED
UPDATED
ADVISORY ID
MINI-2v5v-cpp3-q7j3
EXPLOITABILITY SCORE
-
EXPLOITS FOUND
-
COMMON WEAKNESS ENUMERATION (CWE)-
minimos
CREATED
UPDATED
ADVISORY ID
MINI-42wr-8w2m-45mh
EXPLOITABILITY SCORE
-
EXPLOITS FOUND
-
COMMON WEAKNESS ENUMERATION (CWE)-