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Vulnerability record · CVE-2022-27780 · published 2 June 2022

CVE-2022-27780: Haxx curl server-side request forgery (ssrf) vulnerability

Haxx · Curl

The curl URL parser wrongly accepts percent-encoded URL separators like '/'when decoding the host name part of a URL, making it a *different* URL usingthe wrong host name when it is later retrieved.For example, a URL like `http://example.com%2F127.0.0.1/`, would be allowed bythe parser and get transposed into `http://example.com/127.0.0.1/`. This flawcan be used to circumvent filters, checks and more.

7.5 CVSS 3.1 High EPSS 2.5% · top 16.1% CWE-177 · CWE-177CWE-918 · Server-side request forgery (SSRF)
7.5CVSS 3.1 base score, v2 5.0
2.5%EPSS exploitation probability, 30 days
NoNot in CISA KEV
10Affected product versions listed by NVD
6References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

The curl URL parser wrongly accepts percent-encoded URL separators like '/'when decoding the host name part of a URL, making it a *different* URL usingthe wrong host name when it is later retrieved.For example, a URL like `http://example.com%2F127.0.0.1/`, would be allowed bythe parser and get transposed into `http://example.com/127.0.0.1/`. This flawcan be used to circumvent filters, checks and more.

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

Affected products

10 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://hackerone.com/reports/1553841 ExploitThird Party Advisory
https://security.gentoo.org/glsa/202212-01 Third Party Advisory
https://security.netapp.com/advisory/ntap-20220609-0009/ Third Party Advisory
https://hackerone.com/reports/1553841 ExploitThird Party Advisory
https://security.gentoo.org/glsa/202212-01 Third Party Advisory
https://security.netapp.com/advisory/ntap-20220609-0009/ Third Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2022-27780), CISA KEV, FIRST EPSS (scores of 2026-10-02). This page is refreshed as NVD updates the record.