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Vulnerability from cleanstart
Published
2026-07-30 07:10
Modified
2026-07-30 09:38
Summary
Security fixes in curl 8.11.0-r0
Details
Package curl version 8.11.0-r0 fixes 1 vulnerabilities: CVE-2024-9681
References
| URL | Type | ||||
|---|---|---|---|---|---|
|
|||||
{
"affected": [
{
"package": {
"ecosystem": "Alpine",
"name": "curl"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "8.11.0-r0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"8.11.0-r0"
]
}
],
"credits": [],
"database_specific": {},
"details": "Package curl version 8.11.0-r0 fixes 1 vulnerabilities: CVE-2024-9681",
"id": "CLEANSTART-2026-IG38544",
"modified": "2026-07-30T09:38:45Z",
"published": "2026-07-30T07:10:53Z",
"references": [
{
"type": "WEB",
"url": "https://curl.se/"
}
],
"related": [],
"schema_version": "1.7.3",
"summary": "Security fixes in curl 8.11.0-r0",
"upstream": [
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]
}
CVE-2024-9681 (GCVE-0-2024-9681)
Vulnerability from cvelistv5 – Published: 2024-11-06 07:47 – Updated: 2025-11-03 20:56
VLAI
EPSS
VEX
Title
HSTS subdomain overwrites parent cache entry
Summary
When curl is asked to use HSTS, the expiry time for a subdomain might
overwrite a parent domain's cache entry, making it end sooner or later than
otherwise intended.
This affects curl using applications that enable HSTS and use URLs with the
insecure `HTTP://` scheme and perform transfers with hosts like
`x.example.com` as well as `example.com` where the first host is a subdomain
of the second host.
(The HSTS cache either needs to have been populated manually or there needs to
have been previous HTTPS accesses done as the cache needs to have entries for
the domains involved to trigger this problem.)
When `x.example.com` responds with `Strict-Transport-Security:` headers, this
bug can make the subdomain's expiry timeout *bleed over* and get set for the
parent domain `example.com` in curl's HSTS cache.
The result of a triggered bug is that HTTP accesses to `example.com` get
converted to HTTPS for a different period of time than what was asked for by
the origin server. If `example.com` for example stops supporting HTTPS at its
expiry time, curl might then fail to access `http://example.com` until the
(wrongly set) timeout expires. This bug can also expire the parent's entry
*earlier*, thus making curl inadvertently switch back to insecure HTTP earlier
than otherwise intended.
Severity
5.9 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
13 references
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| curl | curl |
Affected:
8.10.1 , ≤ 8.10.1
(semver)
Affected: 8.10.0 , ≤ 8.10.0 (semver) Affected: 8.9.1 , ≤ 8.9.1 (semver) Affected: 8.9.0 , ≤ 8.9.0 (semver) Affected: 8.8.0 , ≤ 8.8.0 (semver) Affected: 8.7.1 , ≤ 8.7.1 (semver) Affected: 8.7.0 , ≤ 8.7.0 (semver) Affected: 8.6.0 , ≤ 8.6.0 (semver) Affected: 8.5.0 , ≤ 8.5.0 (semver) Affected: 8.4.0 , ≤ 8.4.0 (semver) Affected: 8.3.0 , ≤ 8.3.0 (semver) Affected: 8.2.1 , ≤ 8.2.1 (semver) Affected: 8.2.0 , ≤ 8.2.0 (semver) Affected: 8.1.2 , ≤ 8.1.2 (semver) Affected: 8.1.1 , ≤ 8.1.1 (semver) Affected: 8.1.0 , ≤ 8.1.0 (semver) Affected: 8.0.1 , ≤ 8.0.1 (semver) Affected: 8.0.0 , ≤ 8.0.0 (semver) Affected: 7.88.1 , ≤ 7.88.1 (semver) Affected: 7.88.0 , ≤ 7.88.0 (semver) Affected: 7.87.0 , ≤ 7.87.0 (semver) Affected: 7.86.0 , ≤ 7.86.0 (semver) Affected: 7.85.0 , ≤ 7.85.0 (semver) Affected: 7.84.0 , ≤ 7.84.0 (semver) Affected: 7.83.1 , ≤ 7.83.1 (semver) Affected: 7.83.0 , ≤ 7.83.0 (semver) Affected: 7.82.0 , ≤ 7.82.0 (semver) Affected: 7.81.0 , ≤ 7.81.0 (semver) Affected: 7.80.0 , ≤ 7.80.0 (semver) Affected: 7.79.1 , ≤ 7.79.1 (semver) Affected: 7.79.0 , ≤ 7.79.0 (semver) Affected: 7.78.0 , ≤ 7.78.0 (semver) Affected: 7.77.0 , ≤ 7.77.0 (semver) Affected: 7.76.1 , ≤ 7.76.1 (semver) Affected: 7.76.0 , ≤ 7.76.0 (semver) Affected: 7.75.0 , ≤ 7.75.0 (semver) Affected: 7.74.0 , ≤ 7.74.0 (semver) |
|
| curl | curl |
Unaffected:
0 , < 7.74.0
(semver)
Affected: 7.74.0 , ≤ 8.10.1 (semver) Unaffected: 8.11.0 , < * (semver) cpe:2.3:a:curl:curl:*:*:*:*:*:*:*:* |
Credits
newfunction
Daniel Stenberg
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"baseScore": 5.9,
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"confidentialityImpact": "NONE",
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"lessThanOrEqual": "7.87.0",
"status": "affected",
"version": "7.87.0",
"versionType": "semver"
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"value": "When curl is asked to use HSTS, the expiry time for a subdomain might\noverwrite a parent domain\u0027s cache entry, making it end sooner or later than\notherwise intended.\n\nThis affects curl using applications that enable HSTS and use URLs with the\ninsecure `HTTP://` scheme and perform transfers with hosts like\n`x.example.com` as well as `example.com` where the first host is a subdomain\nof the second host.\n\n(The HSTS cache either needs to have been populated manually or there needs to\nhave been previous HTTPS accesses done as the cache needs to have entries for\nthe domains involved to trigger this problem.)\n\nWhen `x.example.com` responds with `Strict-Transport-Security:` headers, this\nbug can make the subdomain\u0027s expiry timeout *bleed over* and get set for the\nparent domain `example.com` in curl\u0027s HSTS cache.\n\nThe result of a triggered bug is that HTTP accesses to `example.com` get\nconverted to HTTPS for a different period of time than what was asked for by\nthe origin server. If `example.com` for example stops supporting HTTPS at its\nexpiry time, curl might then fail to access `http://example.com` until the\n(wrongly set) timeout expires. This bug can also expire the parent\u0027s entry\n*earlier*, thus making curl inadvertently switch back to insecure HTTP earlier\nthan otherwise intended."
}
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Trend slope:
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(linear fit over daily sighting counts)
Show additional events:
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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.
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