CVE-2022-27780 — The curl URL parser wrongly accepts percent-encoded URL separators like '/'when decoding the host...

Triage

Is it exploited, how likely is exploitation, what does it touch, and how severe do the sources call it.

CISA SSVC assessment CISA

Three decision points CISA publishes for the CVEs it assesses (SSVC 2.0.3). A stakeholder decision, not a severity score.

Remediation

Fixes and mitigations documented by the sources — linked to the original advisory.

No fix documented by the sources we poll. That does not mean none exists: check the vendor advisory.

First 24 hours

Ordered from the record’s own fields — exposure first, because you cannot patch what you have not found. A rule-generated starting point.

1. Identify exposed assets running the affected vendor/product/version combinations (Haxx Curl, Netapp Clustered Data Ontap, Netapp H300s Firmware…).
2. The attack is network-based and needs no privileges: restrict exposure (ACLs, VPN, WAF) until patched.
3. No fix documented in the sources: reduce exposure and monitor the vendor advisory.
4. Search available logs for exploit probes matching the vulnerability class (ssrf), errors and authentication anomalies.

Affected scope

Vendor, product and versions as the sources word them.

Attack characteristics

The CVSS vector, decoded. It describes the attack, not your exposure to it.

Every base score collected

Sources score independently and may disagree; each row says who scored it and under which version.

Weakness MITRE

Weakness class according to MITRE’s CWE catalog.

CWE-918 · Server-Side Request Forgery (SSRF)

Other CVEs with this weakness →

Detection

Read off the CVSS vector and the weakness class. Starting points, not tested rules.

• Prioritize edge telemetry for the network-reachable component (proxy, WAF, IDS/IPS).
• Monitor outbound requests from the server to internal IPs and cloud metadata endpoints.

Timeline

What happened to this CVE, newest first.

• 2026
• SSVC assessment updated
  Oct 14, 2026 · CVE Program (cve.org) e CISA ADP
• Record published
  Oct 14, 2026
• Affected products added · haxx/curl, netapp/hci bootstrap os, netapp/clustered data ontap, netapp/solidfire, enterprise sds & hci storage node, ne
  Oct 14, 2026 · NIST National Vulnerability Database
• CVSS changed · 7.5
  Oct 14, 2026 · NIST National Vulnerability Database
• Source status changed · → Modified
  Oct 14, 2026 · NIST National Vulnerability Database
• Record created in this database
  Oct 14, 2026 · Alertas do Telegram
• 2022
• CVE published
  Jun 2, 2022 · hackerone

Source activity

Repeated readings are counted rather than listed.

• 2× References added · Oct 14, 2026 – Oct 14, 2026
• 1× Official description updated · Oct 14, 2026 – Oct 14, 2026

References

7 on the record

• security.gentoo.org/glsa/202212-01
  Third Party Advisory, vendor-advisory, NIST National Vulnerability Database
• cert-portal.siemens.com/productcert/html/ssa-398330.html
  NIST National Vulnerability Database
• nvd.nist.gov/vuln/detail/CVE-2022-27780
  GitHub Security Advisories
• security.netapp.com/advisory/ntap-20220609-0009
  GitHub Security Advisories
• github.com/advisories/GHSA-82rv-h33p-2xgc
  GitHub Security Advisories
• security.netapp.com/advisory/ntap-20220609-0009/
  Third Party Advisory, NIST National Vulnerability Database
• hackerone.com/reports/1553841
  Exploit, Third Party Advisory, NIST National Vulnerability Database

Elsewhere on this site

Related CVEs (same products)

• High CVE-2026-82209 Insertion of Sensitive Information Into Sent Data in Haxx Curl Sep 6, 2026
• High CVE-2026-80229 Use After Free in Haxx Curl Sep 6, 2026
• High CVE-2026-80230 Improper Certificate Validation in Haxx Curl Sep 6, 2026
• High CVE-2026-80231 A flaw in libcurl makes it wrongly reuse an existing HTTPS connection setup for a given… Sep 6, 2026
• High CVE-2026-82208 Improper Certificate Validation in Haxx Curl Sep 6, 2026
• High CVE-2026-80255 Insertion of Sensitive Information Into Sent Data in Haxx Curl Sep 6, 2026

Not in any source we poll

Listed rather than left blank: an empty field and an unmeasured one look identical on screen, and only one is a reason to look elsewhere.

• No fixed version, patch or mitigation documented.
• No confirmed IOCs, IP addresses, domains, file hashes, or malware artifacts supplied.
• No organization-specific asset inventory, compensating-control status, or patch deployment evidence supplied.
• No exploit packet captures, log samples, or incident case IDs supplied.

Answered from this record

Text assembled only from the fields above — no additional claims.

What should defenders know first?

CVE-2022-27780 is "The curl URL parser wrongly accepts percent-encoded URL separators like '/'when decoding the host...", rated High. It affects Curl (Haxx); versions are in the scope table. It is not in CISA KEV, which does not rule out exploitation. CVSS 7.5 describes technical severity. EPSS 2.47% estimates the probability of exploitation in 30 days; neither replaces your asset context. First verify whether exposed or business-critical assets run the affected versions, apply vendor fixes or mitigations, and preserve logs for review.

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