The tailMatch function in cookie.c in cURL and libcurl before 7.30.0 does not properly match the path domain when sending cookies, which all
Noroxi assessment
Priority: Monitor (action score 21/100)
- The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
- Probability of exploitation in the next 30 days: 4.3% (FIRST EPSS); higher than 91% of all records.
- No special conditions are required; it is repeatable.
- Fixed version: curl (Debian:12) 7.29.0-2.1; curl (Debian:6.0) 7.21.0-2.1+squeeze3; curl (openSUSE:Tumbleweed) 7.51.0-1.1.
Low priority for now. Upgrade to curl (Debian:12) 7.29.0-2.1; curl (Debian:6.0) 7.21.0-2.1+squeeze3; curl (openSUSE:Tumbleweed) 7.51.0-1.1 or later.
Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it
Primary sources: NVD · CVE.org · FIRST EPSS
The tailMatch function in cookie.c in cURL and libcurl before 7.30.0 does not properly match the path domain when sending cookies, which allows remote attackers to steal cookies via a matching suffix in the domain of a URL.
- Published
- Apr 29, 2013
- Updated
- Jun 16, 2026
- EPSS
- 4.3% · 91th percentile
- CWE
- CWE-200
Report tools
Action score
21
Monitor
Low priority for now.
- CVSS
- 20 / 40 · 5.0 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 1 / 30 · 4.3%
Get told when this record changes
- Not in KEV: no record of exploitation in the wild
- No public exploit code on record
- A fix has been released
If any of these changes, we'll tell you in the daily email digest.
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Noroxi analysis
What does it mean in your environment?
The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.
We use this product, ask for helpAffected systems
Is your version affected?
Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.
| Vendor | Product | CPE |
|---|---|---|
| haxx | curl | cpe:2.3:a:haxx:curl |
| haxx | libcurl | cpe:2.3:a:haxx:libcurl |
| canonical | ubuntu linux | cpe:2.3:o:canonical:ubuntu_linux |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- canonical ubuntu linux10.04
- canonical ubuntu linux11.10
- canonical ubuntu linux12.04
- canonical ubuntu linux12.10
- canonical ubuntu linux8.04
- haxx curlup to 7.29.0 inclusive
- haxx curl6.0
- haxx curl6.1
- haxx curl6.2
- haxx curl6.3
- haxx curl6.3.1
- haxx curl6.4
- haxx curl6.5
- haxx curl6.5.1
- haxx curl6.5.2
- haxx curl7.1
- haxx curl7.1.1
- haxx curl7.10
- haxx curl7.10.1
- haxx curl7.10.2
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Debian:12 | curl | before 7.29.0-2.1 | 7.29.0-2.1 |
| Debian:6.0 | curl | before 7.21.0-2.1+squeeze3 | 7.21.0-2.1+squeeze3 |
| openSUSE:Tumbleweed | curl | before 7.51.0-1.1 | 7.51.0-1.1 |
| Red Hat:enterprise_linux:5::server | curl | before 0:7.15.5-16.el5_9 | 0:7.15.5-16.el5_9 |
| Red Hat:enterprise_linux:5::server | curl-debuginfo | before 0:7.15.5-16.el5_9 | 0:7.15.5-16.el5_9 |
| Red Hat:enterprise_linux:5::server | curl-devel | before 0:7.15.5-16.el5_9 | 0:7.15.5-16.el5_9 |
| Red Hat:enterprise_linux:6::client | curl | before 0:7.19.7-36.el6_4 | 0:7.19.7-36.el6_4 |
| Red Hat:enterprise_linux:6::client | curl-debuginfo | before 0:7.19.7-36.el6_4 | 0:7.19.7-36.el6_4 |
| Red Hat:enterprise_linux:6::client | libcurl | before 0:7.19.7-36.el6_4 | 0:7.19.7-36.el6_4 |
| Red Hat:enterprise_linux:6::client | libcurl-devel | before 0:7.19.7-36.el6_4 | 0:7.19.7-36.el6_4 |
Same product
haxx: all recordsOther highest-scoring records for the same primary product.
- CVE-2021-22901curl 7.75.0 through 7.76.1 suffers from a use-after-free vulnerability resulting in already freed memory being used when a TLS 1.3 session t50Plan
- CVE-2023-38039When curl retrieves an HTTP response, it stores the incoming headers so that
they can be accessed later via the libcurl headers API.47Plan
- CVE-2024-2398HTTP/2 push headers memory-leak45Plan
- CVE-2019-5482Heap buffer overflow in the TFTP protocol handler in cURL 7.19.4 to 7.65.3.44Plan
- CVE-2017-8817The FTP wildcard function in curl and libcurl before 7.57.0 allows remote attackers to cause a denial of service (out-of-bounds read and app42Plan
- CVE-2017-8816The NTLM authentication feature in curl and libcurl before 7.57.0 on 32-bit platforms allows attackers to cause a denial of service (integer42Plan
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| debian:curl | 7.29.0-2.1 · Debian:12 | Package registry (OSV) |
| opensuse:curl | 7.51.0-1.1 · openSUSE:Tumbleweed | Package registry (OSV) |
| red hat:curl | 0:7.15.5-16.el5_9 · Red Hat:enterprise_linux:5::server | Package registry (OSV) |
| red hat:curl-debuginfo | 0:7.15.5-16.el5_9 · Red Hat:enterprise_linux:5::server | Package registry (OSV) |
| red hat:curl-devel | 0:7.15.5-16.el5_9 · Red Hat:enterprise_linux:5::server | Package registry (OSV) |
| red hat:libcurl | 0:7.19.7-36.el6_4 · Red Hat:enterprise_linux:6::client | Package registry (OSV) |
| red hat:libcurl-devel | 0:7.19.7-36.el6_4 · Red Hat:enterprise_linux:6::client | Package registry (OSV) |
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- P · data can be read
- Integrity
- none
- Availability
- none
- Attack complexity
- Low
- Confidentiality impact
- P
- Integrity impact
- None
- Availability impact
- None
Weakness class (CWE)
CWE-200 · Exposure of Sensitive Information to an Unauthorized ActorCVSS vector
AV:N/AC:L/Au:N/C:P/I:N/A:N
nvd-primary
Root cause
The extension requests broader permissions than its function needs and sends the data it collects out for purposes beyond its stated function.
The bug in code
The whole CWE-200 classA representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.
Vulnerable
{ "permissions": ["tabs", "<all_urls>"], "background": { "service_worker": "analytics.js" }}Fixed
{ "permissions": ["activeTab"], "host_permissions": ["https://yildiz.example/*"]}Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Attack patterns (CAPEC)
- ExcavationCAPEC-116likelihood: High · Medium
- Subverting Environment Variable ValuesCAPEC-13likelihood: High · Very High
- FootprintingCAPEC-169likelihood: High · Very Low
- Exploiting Trust in ClientCAPEC-22likelihood: High · High
- FingerprintingCAPEC-224likelihood: High · Very Low
- ICMP Echo Request PingCAPEC-285likelihood: Medium · Low
- TCP SYN ScanCAPEC-287Low
- Enumerate Mail Exchange (MX) RecordsCAPEC-290Low
ATT&CK techniques
- System Service DiscoveryT1007
- System Network Configuration DiscoveryT1016
- Remote System DiscoveryT1018
- System Owner/User DiscoveryT1033
- Masquerading: Match Legitimate Name or LocationT1036.005
- Network Service ScanningT1046
- System Network Connections DiscoveryT1049
- Process DiscoveryT1057
- Permission Groups DiscoveryT1069
- System Information DiscoveryT1082
- File and Directory DiscoveryT1083
- Account DiscoveryT1087
- Multi-Factor Authentication InterceptionT1111
- Peripheral Device DiscoveryT1120
- System Time DiscoveryT1124
- Access Token Manipulation:Token Impersonation/TheftT1134.001
Change log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
Show all references (19 more)Show less
- secunia.com/advisories/53044
- curl.haxx.se/docs/adv_20130412.html
- lists.apple.com/archives/security-announce/2013/Oct/msg00004.html
- lists.fedoraproject.org/pipermail/package-announce/2013-April/102056.html
- lists.fedoraproject.org/pipermail/package-announce/2013-April/102711.html
- lists.fedoraproject.org/pipermail/package-announce/2013-May/104207.html
- lists.fedoraproject.org/pipermail/package-announce/2013-May/104598.html
- lists.fedoraproject.org/pipermail/package-announce/2013-May/105539.html
- lists.fedoraproject.org/pipermail/package-announce/2013-May/106606.html
- lists.opensuse.org/opensuse-updates/2013-06/msg00013.html
- lists.opensuse.org/opensuse-updates/2013-06/msg00016.html
- secunia.com/advisories/53051
- secunia.com/advisories/53097
- www.debian.org/security/2012/dsa-2660
- www.mandriva.com/security/advisories?name=MDVSA-2013:151
- www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html
- www.osvdb.org/92316
- www.securityfocus.com/bid/59058
- www.ubuntu.com/usn/USN-1801-1
Vendor advisories and official records. Exploit/PoC links are deliberately left out.