UBUNTU-CVE-2026-102555 (CVE-2026-102555)
Vulnerability from osv_ubuntu – Published: 2026-09-29 18:17 – Updated: 2026-09-29 18:17 – Source website
VLAI
Details
A flaw was found in libsoup. The soup_uri_decode_data_uri() function incorrectly treated base64 data-URI payloads as NUL-terminated strings when calling g_base64_decode_inplace(). If the percent-decoded payload contained embedded NUL bytes, the decoded length could remain uninitialized and be used as the size of the returned GBytes. This can lead to an out-of-bounds read or application crash when processing a crafted data URI.
Severity
8.2 (High)
N/A (UNKNOWN)
References
{
"affected": [
{
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},
"ranges": [
{
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{
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}
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]
},
{
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},
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"2.62.1-1ubuntu0.4+esm2",
"2.62.1-1ubuntu0.4+esm3",
"2.62.1-1ubuntu0.4+esm4",
"2.62.1-1ubuntu0.4+esm5",
"2.62.1-1ubuntu0.4+esm6",
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]
},
{
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},
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]
},
{
"ecosystem_specific": {
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},
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},
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"3.0.7-0ubuntu1+esm1",
"3.0.7-0ubuntu1+esm2",
"3.0.7-0ubuntu1+esm3",
"3.0.7-0ubuntu1+esm4",
"3.0.7-0ubuntu1+esm5",
"3.0.7-0ubuntu1+esm6",
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"3.0.7-0ubuntu1+esm8"
]
},
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}
]
},
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},
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],
"aliases": [],
"details": "A flaw was found in libsoup. The soup_uri_decode_data_uri() function incorrectly treated base64 data-URI payloads as NUL-terminated strings when calling g_base64_decode_inplace(). If the percent-decoded payload contained embedded NUL bytes, the decoded length could remain uninitialized and be used as the size of the returned GBytes. This can lead to an out-of-bounds read or application crash when processing a crafted data URI.",
"id": "UBUNTU-CVE-2026-102555",
"modified": "2026-09-29T18:17:00Z",
"published": "2026-09-29T18:17:00Z",
"references": [
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2026-102555"
},
{
"type": "REPORT",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-102555"
},
{
"type": "REPORT",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2543224"
},
{
"type": "REPORT",
"url": "https://gitlab.gnome.org/GNOME/libsoup/-/work_items/554"
},
{
"type": "REPORT",
"url": "https://access.redhat.com/security/cve/CVE-2026-102555"
}
],
"related": [],
"schema_version": "1.7.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
],
"upstream": [
"CVE-2026-102555"
]
}
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Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
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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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