curl: URL sanitization vulnerability
Published Apr 13, 2012
7.5
HIGHCVSS 2.0
EPSS 16.12%
Description
curl and libcurl 7.2x before 7.24.0 do not properly consider special characters during extraction of a pathname from a URL, which allows remote attackers to conduct data-injection attacks via a crafted URL, as demonstrated by a CRLF injection attack on the (1) IMAP, (2) POP3, or (3) SMTP protocol.
Affected products
No data.
Configuration 1
- 7.20.0
- 7.20.1
- 7.21.0
- 7.21.1
- 7.21.2
- 7.21.3
- 7.21.4
- 7.21.5
- 7.21.6
- 7.21.7
- 7.22.0
- 7.23.0
- 7.23.1
Configuration 2
- 7.20.0
- 7.20.1
- 7.21.0
- 7.21.1
- 7.21.2
- 7.21.3
- 7.21.4
- 7.21.5
- 7.21.6
- 7.21.7
- 7.22.0
- 7.23.0
- 7.23.1
No data.
Red Hat Enterprise Linux 4
curl
Not affected
Red Hat Enterprise Linux 5
curl
Not affected
Red Hat Enterprise Linux 6
curl
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 4 | curl | Not affected | n/a |
| Red Hat Enterprise Linux 5 | curl | Not affected | n/a |
| Red Hat Enterprise Linux 6 | curl | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
Not vulnerable. This issue did not affect the versions of curl as shipped with Red Hat Enterprise Linux 4, 5 or 6.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:N/AC:L/Au:N/C:P/I:P/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (17 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 16.12% (0.16117) | 96.83th | v5 (v2026.06.15) |
| Jun 15, 2026 | 16.72% (0.16723) | 96.62th | v5 (v2026.06.15) |
| Mar 25, 2026 | 10.34% (0.10342) | 93.14th | v4 (v2025.03.14) |
| Dec 7, 2025 | 6.54% (0.06535) | 90.75th | v4 (v2025.03.14) |
| Dec 3, 2025 | 8.59% (0.08593) | 92.12th | v4 (v2025.03.14) |
| Oct 22, 2025 | 11.77% (0.11769) | 93.38th | v4 (v2025.03.14) |
| Jul 15, 2025 | 8.10% (0.08098) | 91.74th | v4 (v2025.03.14) |
| Jul 10, 2025 | 5.72% (0.05723) | 90.02th | v4 (v2025.03.14) |
| Mar 30, 2025 | 7.49% (0.07494) | 90.94th | v4 (v2025.03.14) |
| Mar 29, 2025 | 12.45% (0.12454) | 89.83th | v4 (v2025.03.14) |
| Mar 17, 2025 | 7.49% (0.07494) | 91.14th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.92% (0.00919) | 83.58th | v3 (v2023.03.01) |
| Mar 5, 2024 | 0.92% (0.00919) | 82.45th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.92% (0.00919) | 80.45th | v3 (v2023.03.01) |
| Mar 6, 2023 | 3.78% (0.03779) | 85.48th | v2 (v2022.01.01) |
| Apr 1, 2022 | 3.78% (0.03779) | 84.01th | v2 (v2022.01.01) |
| Feb 4, 2022 | 3.78% (0.03779) | 67.21th | v2 (v2022.01.01) |
References (18)
- http://curl.haxx.se/curl-url-sanitize.patch x_refsource_CONFIRMPatch
- http://curl.haxx.se/docs/adv_20120124.html x_refsource_CONFIRMVendor Advisory
- http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c03360041 vendor-advisoryx_refsource_HP
- http://lists.apple.com/archives/security-announce/2012/May/msg00001.html vendor-advisoryx_refsource_APPLE
- http://secunia.com/advisories/48256 third-party-advisoryx_refsource_SECUNIA
- http://security.gentoo.org/glsa/glsa-201203-02.xml vendor-advisoryx_refsource_GENTOO
- http://support.apple.com/kb/HT5281 x_refsource_CONFIRM
- http://www.debian.org/security/2012/dsa-2398 vendor-advisoryx_refsource_DEBIAN
- http://www.mandriva.com/security/advisories?name=MDVSA-2012:058 vendor-advisoryx_refsource_MANDRIVA
- http://www.oracle.com/technetwork/topics/security/cpujul2015-2367936.html x_refsource_CONFIRM
- http://www.securityfocus.com/bid/51665 vdb-entryx_refsource_BID
- http://www.securitytracker.com/id/1032924 vdb-entryx_refsource_SECTRACK
- https://access.redhat.com/security/cve/CVE-2012-0036 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=773457 x_refsource_CONFIRMIssue Tracking
- https://github.com/bagder/curl/commit/75ca568fa1c19de4c5358fed246686de8467c238 x_refsource_CONFIRM
- https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03760en_us x_refsource_CONFIRM
- https://nvd.nist.gov/vuln/detail/CVE-2012-0036
- https://www.cve.org/CVERecord?id=CVE-2012-0036
Change history (0)
No recorded changes yet.