CVE-2018-1000007

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2022-04-30. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
9.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 8%CVSS: 9.8Exploit: NoneExposed: 0

A fix is available — apply it.

libcurl 7.1 through 7.57.0 might accidentally leak authentication data to third parties. When asked to send custom headers in its HTTP requests, libcurl will send that set of headers first to the host in the initial URL but also, if asked to follow redirects and a 30X HTTP response code is returned, to the host mentioned in URL in the Location: response header value. Sending the same set of headers to subsequent hosts is in particular a problem for applications that pass on custom Authorization: headers, as this header often contains privacy sensitive information or data that could allow others to impersonate the libcurl-using client's request.

CVSS v3
9.8
EG Score
9.8(medium)
EPSS
94.1%
KEV
Not listed

Published

January 24, 2018

Last Modified

November 21, 2024

Advisory Details (10)

Auto-updated Jun 7, 2026
Patch available. Sources: redhat.
generic Patch Available

[SECURITY] [DLA 1263-1] curl security update

https://lists.debian.org/debian-lts-announce/2018/01/msg00038.html
generic

curl - HTTP authentication leak in redirects - CVE-2018-1000007

https://curl.haxx.se/docs/adv_2018-b3bf.html
redhat Patch Available

Affected: Red Hat Enterprise Linux 7.4 Advanced Update Support, Red Hat Enterprise Linux 7.4 Telco Extended Update Support, and Red Hat

https://access.redhat.com/errata/RHSA-2020:0594
redhat Patch Available

Affected: Red Hat Enterprise Linux 7.5 Extended Update Support.

https://access.redhat.com/errata/RHSA-2020:0544
redhat Patch Available
https://access.redhat.com/errata/RHSA-2019:1543
redhat Patch Available

Affected: Red Hat Enterprise Linux 7. (BZ#1640722)

https://access.redhat.com/errata/RHSA-2018:3558
redhat Patch Available

Affected: Red Hat Enterprise Linux 7.

https://access.redhat.com/errata/RHSA-2018:3157
redhat Patch Available
https://access.redhat.com/errata/RHBA-2019:0327
generic
http://www.securitytracker.com/id/1040274
generic

oss-security - [SECURITY ADVISORY] curl auth/cookie leak on redirect

http://www.openwall.com/lists/oss-security/2022/04/27/4

Patch Availability(7)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulibcurl3 (7.22.0-3ubuntu4.20) @ precise2026-05-28ubuntu
ubuntulibcurl4-openssl-dev (7.47.0-1ubuntu2.6) @ xenial2026-05-28ubuntu
redhatcurl-0:7.29.0-42.el7_4.22020-02-25redhat
redhatcurl-0:7.29.0-46.el7_5.12020-02-19redhat
redhatjbcs-httpd24-curl2019-06-18redhat
redhathttpd24-nghttp2-0:1.7.1-7.el72018-11-13redhat
redhatnss-pem-0:1.0.3-5.el72018-10-30redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

All Vendor Advisories

(7)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 13× in last 7d / 43× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-07 13:42 UTCEPSS rescore
  2. 2026-07-06 16:24 UTCEPSS rescore
  3. 2026-07-06 16:24 UTCEPSS rescore
  4. 2026-07-06 02:20 UTCEPSS rescore
  5. 2026-07-06 02:20 UTCEPSS rescore
  6. 2026-07-05 02:27 UTCEPSS rescore
  7. 2026-07-04 14:26 UTCOSV refresh
  8. 2026-07-04 06:28 UTCEPSS rescore
  9. 2026-07-04 06:28 UTCEPSS rescore
  10. 2026-07-02 16:54 UTCEPSS rescore
  11. 2026-07-01 15:03 UTCEPSS rescore
  12. 2026-06-30 23:19 UTCEPSS rescore
  13. 2026-06-30 23:19 UTCEPSS rescore
  14. 2026-06-29 14:03 UTCEPSS rescore
  15. 2026-06-28 14:04 UTCEPSS rescore
  16. 2026-06-28 04:53 UTCEPSS rescore
  17. 2026-06-28 04:53 UTCEPSS rescore
  18. 2026-06-27 03:06 UTCEPSS rescore
  19. 2026-06-25 13:47 UTCEPSS rescore
  20. 2026-06-24 14:02 UTCEPSS rescore
  21. 2026-06-24 14:02 UTCEPSS rescore
  22. 2026-06-23 21:30 UTCEPSS rescore
  23. 2026-06-23 21:30 UTCEPSS rescore
  24. 2026-06-22 14:23 UTCEPSS rescore
  25. 2026-06-22 14:23 UTCEPSS rescore
Show 46 more
  1. 2026-06-21 14:54 UTCEPSS rescore
  2. 2026-06-21 14:54 UTCEPSS rescore
  3. 2026-06-21 01:57 UTCEPSS rescore
  4. 2026-06-21 01:57 UTCEPSS rescore
  5. 2026-06-19 19:23 UTCEPSS rescore
  6. 2026-06-19 19:23 UTCEPSS rescore
  7. 2026-06-18 17:50 UTCEPSS rescore
  8. 2026-06-17 17:50 UTCEPSS rescore
  9. 2026-06-16 17:50 UTCEPSS rescore
  10. 2026-06-16 02:09 UTCOSV refresh
  11. 2026-06-15 17:45 UTCEPSS rescore
  12. 2026-06-13 22:58 UTCEPSS rescore
  13. 2026-06-13 22:57 UTCEPSS rescore
  14. 2026-06-12 23:09 UTCEPSS rescore
  15. 2026-06-12 23:09 UTCEPSS rescore
  16. 2026-06-11 13:57 UTCEPSS rescore
  17. 2026-06-10 22:15 UTCEPSS rescore
  18. 2026-06-10 13:19 UTCEPSS rescore
  19. 2026-06-07 15:22 UTCEPSS rescore
  20. 2026-06-07 15:22 UTCEPSS rescore
  21. 2026-06-06 13:45 UTCEPSS rescore
  22. 2026-06-06 13:45 UTCEPSS rescore
  23. 2026-06-05 22:44 UTCEPSS rescore
  24. 2026-06-05 22:44 UTCEPSS rescore
  25. 2026-06-05 06:08 UTCEPSS rescore
  26. 2026-06-05 06:08 UTCEPSS rescore
  27. 2026-06-04 13:10 UTCEPSS rescore
  28. 2026-06-04 13:10 UTCEPSS rescore
  29. 2026-06-02 20:11 UTCEPSS rescore
  30. 2026-06-02 20:11 UTCEPSS rescore
  31. 2026-06-01 13:49 UTCEPSS rescore
  32. 2026-06-01 13:49 UTCEPSS rescore
  33. 2026-05-31 22:28 UTCEPSS rescore
  34. 2026-05-31 00:14 UTCEPSS rescore
  35. 2026-05-31 00:14 UTCEPSS rescore
  36. 2026-05-29 13:41 UTCEPSS rescore
  37. 2026-05-28 13:42 UTCEPSS rescore
  38. 2026-05-28 13:42 UTCEPSS rescore
  39. 2026-05-28 12:09 UTCEG score recompute
  40. 2026-05-28 12:09 UTCVendor advisory
  41. 2026-05-28 12:09 UTCGHSA enrichment
  42. 2026-05-27 13:38 UTCEPSS rescore
  43. 2026-05-27 13:38 UTCEPSS rescore
  44. 2026-05-26 07:17 UTCEPSS rescore
  45. 2026-05-26 07:17 UTCEPSS rescore
  46. 2026-05-25 16:46 UTCOSV refresh

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Frequently asked(5)

What is CVE-2018-1000007?
CVE-2018-1000007 is a critical vulnerability published on January 24, 2018. libcurl 7.1 through 7.57.0 might accidentally leak authentication data to third parties. When asked to send custom headers in its HTTP requests, libcurl will send that set of headers first to the host in the initial URL but also, if asked to follow redirects and a 30X HTTP response code is…
When was CVE-2018-1000007 disclosed?
CVE-2018-1000007 was first published in the National Vulnerability Database on January 24, 2018, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2018-1000007 actively exploited?
CVE-2018-1000007 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 94.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2018-1000007?
CVE-2018-1000007 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2018-1000007?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2018-1000007, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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