01 Record

CVE-2023-46218

This flaw allows a malicious HTTP server to set "super cookies" in curl that are then passed back to more origins than what is otherwise allowed or possible. This allows a site to set cookies that

MediumPUBLISHEDCNA: hackerone

CNA base score6.5 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

View raw JSON

02 Description

This flaw allows a malicious HTTP server to set "super cookies" in curl that are then passed back to more origins than what is otherwise allowed or possible. This allows a site to set cookies that

03 Exploitation and scoring

Exploitation

Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.

SSVC decision

ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

1.69% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 75.0% of scored records. A rank, not a probability.

NVD base score

6.5 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

Red Hat severity

Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published

2023-12-07 01:10Z2 YR AGO

Last updated

2026-07-14 12:07Z1 MO AGO

Reserved

2023-10-19

Assigning CNA

hackerone

Record state

PUBLISHED

Severity

Medium (CVSS 6.5)

CNA CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Weaknesses

CWE-178Improper Handling of Case SensitivityBase
CWE-201Insertion of Sensitive Information Into Sent DataBase

Data version

5.2

Document digest

5c4a9704e0a8e400290a27adea7fc71c6f7f09bbd1294b8e7412f2f1d6e2b933

05 Affected products

VendorProductVersionsPlatforms

curlcurl8.4.0 to 8.4.0—

06 References

hackerone.comhttps://hackerone.com/reports/2212193
curl.sehttps://curl.se/docs/CVE-2023-46218.html
lists.fedoraproject.orghttps://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/3ZX3VW67N4ACRAPMV2QS2LVYGD7H2MVE/
lists.fedoraproject.orghttps://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UOGXU25FMMT2X6UUITQ7EZZYMJ42YWWD/
lists.debian.orghttps://lists.debian.org/debian-lts-announce/2023/12/msg00015.html
www.debian.orghttps://www.debian.org/security/2023/dsa-5587
security.netapp.comhttps://security.netapp.com/advisory/ntap-20240125-0007/
cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/html/ssa-093430.html
cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/html/ssa-331112.html
cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/html/ssa-082556.html
cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/html/ssa-202008.html

01 Record index

CVE-2023-46218

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References

02 Records

CVE-2023-46218

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References