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6 vulnerabilities found for libwebsockets by warmcat
CVE-2025-11680 (GCVE-0-2025-11680)
Vulnerability from nvd
Published
2025-10-20 14:04
Modified
2025-10-20 14:34
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-787 - Out-of-bounds Write
Summary
Out-of-bounds Write in unfilter_scanline in warmcat libwebsockets allows, when the LWS_WITH_UPNG flag is enabled during compilation and the HTML display stack is used, to write past a heap allocated buffer possibly causing a crash, when the user visits an attacker controlled website that contains a crafted PNG file with a big width value that causes an integer overflow which value is used for determining the size of a heap allocation.
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| warmcat | libwebsockets |
Version: 4.0 ≤ 4.4.2 Version: 4.0 ≤ 4.3.6 |
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CVE-2025-11679 (GCVE-0-2025-11679)
Vulnerability from nvd
Published
2025-10-20 13:58
Modified
2025-10-20 14:03
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-125 - Out-of-bounds Read
Summary
Out-of-bounds Read in lws_upng_emit_next_line in warmcat libwebsockets allows, when the LWS_WITH_UPNG flag is enabled during compilation and the HTML display stack is used, to read past a heap allocated buffer possibly causing a crash, when the user visits an attacker controlled website that contains a crafted PNG file with a big height dimension.
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| warmcat | libwebsockets |
Version: 4.0 ≤ 4.4.2 Version: 4.0 ≤ 4.3.6 |
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CVE-2025-11677 (GCVE-0-2025-11677)
Vulnerability from nvd
Published
2025-10-20 13:41
Modified
2025-10-24 10:54
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-416 - Use After Free
Summary
Use After Free in WebSocket server implementation in lws_handshake_server in warmcat libwebsockets may allow an attacker, in specific configurations where the user provides a callback function that handles LWS_CALLBACK_HTTP_CONFIRM_UPGRADE, to achieve denial of service.
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| warmcat | libwebsockets |
Version: 3 ≤ 4.4.1,4.3.6 |
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CVE-2025-11680 (GCVE-0-2025-11680)
Vulnerability from cvelistv5
Published
2025-10-20 14:04
Modified
2025-10-20 14:34
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-787 - Out-of-bounds Write
Summary
Out-of-bounds Write in unfilter_scanline in warmcat libwebsockets allows, when the LWS_WITH_UPNG flag is enabled during compilation and the HTML display stack is used, to write past a heap allocated buffer possibly causing a crash, when the user visits an attacker controlled website that contains a crafted PNG file with a big width value that causes an integer overflow which value is used for determining the size of a heap allocation.
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| warmcat | libwebsockets |
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CVE-2025-11679 (GCVE-0-2025-11679)
Vulnerability from cvelistv5
Published
2025-10-20 13:58
Modified
2025-10-20 14:03
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-125 - Out-of-bounds Read
Summary
Out-of-bounds Read in lws_upng_emit_next_line in warmcat libwebsockets allows, when the LWS_WITH_UPNG flag is enabled during compilation and the HTML display stack is used, to read past a heap allocated buffer possibly causing a crash, when the user visits an attacker controlled website that contains a crafted PNG file with a big height dimension.
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| warmcat | libwebsockets |
Version: 4.0 ≤ 4.4.2 Version: 4.0 ≤ 4.3.6 |
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CVE-2025-11677 (GCVE-0-2025-11677)
Vulnerability from cvelistv5
Published
2025-10-20 13:41
Modified
2025-10-24 10:54
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-416 - Use After Free
Summary
Use After Free in WebSocket server implementation in lws_handshake_server in warmcat libwebsockets may allow an attacker, in specific configurations where the user provides a callback function that handles LWS_CALLBACK_HTTP_CONFIRM_UPGRADE, to achieve denial of service.
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
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| warmcat | libwebsockets |
Version: 3 ≤ 4.4.1,4.3.6 |
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