CVE-2022-27780 (GCVE-0-2022-27780)
Vulnerability from cvelistv5 – Published: 2022-06-01 00:00 – Updated: 2026-10-14 16:20
VLAI
EPSS
VEX
Summary
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.
Severity
5.3 (Medium)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-07-26 20:10 UTC
CWE
- CWE-177 - Improper Handling of URL Encoding (Hex Encoding) (CWE-177)
Assigner
References
Impacted products
10 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| n/a | https://github.com/curl/curl |
Affected:
Fixed in 7.83.1
|
||
| haxx | curl |
Affected:
0 , < 7.86.0
(custom)
cpe:2.3:a:haxx:curl:*:*:*:*:*:*:*:* |
||
| netapp | solidfire_\&_hci_storage_node |
Affected:
0
cpe:2.3:a:netapp:solidfire_\&_hci_storage_node:*:*:*:*:*:*:*:* |
||
| netapp | ontap_9 |
Affected:
0
cpe:2.3:a:netapp:ontap_9:*:*:*:*:*:*:*:* |
||
| netapp | solidfire_\&_hci_management_node |
Affected:
h300s
Affected: h410s Affected: h500s Affected: h700s cpe:2.3:a:netapp:hci_baseboard_management_controller:h300s:*:*:*:*:*:*:* cpe:2.3:a:netapp:hci_baseboard_management_controller:h410s:*:*:*:*:*:*:* cpe:2.3:a:netapp:hci_baseboard_management_controller:h500s:*:*:*:*:*:*:* cpe:2.3:a:netapp:hci_baseboard_management_controller:h700s:*:*:*:*:*:*:* |
||
| netapp | hci_bootstrap_os |
Affected:
0
cpe:2.3:o:netapp:hci_bootstrap_os:*:*:*:*:*:*:*:* |
||
| netapp | solidfire_\&_hci_management_node |
Affected:
0
cpe:2.3:a:netapp:solidfire_\&_hci_management_node:*:*:*:*:*:*:*:* |
||
| Siemens | SIMATIC S7-1500 CPU 1518-4 PN/DP MFP |
Affected:
V3.1.0 , < V3.1.5
(custom)
|
guessed | |
| Siemens | SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP |
Affected:
V3.1.0 , < V3.1.5
(custom)
|
guessed | |
| Siemens | SIPLUS S7-1500 CPU 1518-4 PN/DP MFP |
Affected:
V3.1.0 , < V3.1.5
(custom)
|
guessed |
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}
]
}
],
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{
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"value": "The curl URL parser wrongly accepts percent-encoded URL separators like \u0027/\u0027when 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."
},
{
"lang": "es",
"value": "El analizador de URLs de Curl acepta err\u00f3neamente separadores de URL codificados en porcentaje, como \"/\", cuando decodifica la parte del nombre del host de una URL, convirti\u00e9ndola en una URL *diferente* que usa un nombre de host incorrecto cuando es recuperado posteriormente. Por ejemplo, una URL como \"http://example.com%2F127.0.0.1/\", ser\u00eda permitida por el analizador y ser\u00eda transpuesta a \"http://example.com/127.0.0.1/\". Este fallo puede usarse para omitir filtros, comprobaciones y otras cosas"
}
],
"id": "CVE-2022-27780",
"lastModified": "2026-10-14T17:17:37.217",
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"baseSeverity": "MEDIUM",
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"authentication": "NONE",
"availabilityImpact": "NONE",
"baseScore": 5.0,
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"baseScore": 7.5,
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"confidentialityImpact": "NONE",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
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},
{
"source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e",
"url": "https://cert-portal.siemens.com/productcert/html/ssa-398330.html"
}
],
"sourceIdentifier": "support@hackerone.com",
"vulnStatus": "Modified",
"weaknesses": [
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{
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"value": "CWE-177"
}
],
"source": "support@hackerone.com",
"type": "Secondary"
},
{
"description": [
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"value": "CWE-918"
}
],
"source": "nvd@nist.gov",
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}
},
"redhat_vex": {
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"current_release_date": "2026-06-29T22:48:43+00:00",
"cve": "CVE-2022-27780",
"id": "CVE-2022-27780",
"initial_release_date": "2022-05-11T00:00:00+00:00",
"product_status:known_affected": "8",
"product_status:known_not_affected": "23",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "curl: percent-encoded path separator in URL host",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-27780.json",
"version": "3"
},
"vulnrichment": {
"containers": {
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"dateUpdated": "2024-08-03T05:32:59.992Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
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"title": "CVE Program Container"
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{
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{
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],
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"cpe:2.3:a:netapp:hci_baseboard_management_controller:h500s:*:*:*:*:*:*:*",
"cpe:2.3:a:netapp:hci_baseboard_management_controller:h700s:*:*:*:*:*:*:*"
],
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{
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],
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}
}
}
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Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.
Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Vulnerability timeline
Sightings and recorded dates, grouped by day · UTC
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.