Medium
POP3 command injection in user-controlled commands
Type: advisorySources: OSV
The poplib module, when passed a user-controlled command, can have additional commands injected using newlines. Mitigation rejects commands containing control characters.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2025-15367
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 5 Nov 2026, 05:52 UTC · Revision 1
Source evidence
POP3 command injection in user-controlled commands
core-osv · Original sourcePublished 20 Jan 2026, 21:47 UTC
The poplib module, when passed a user-controlled command, can have additional commands injected using newlines. Mitigation rejects commands containing control characters.
osv:CVE-2025-15367
Complete source record
{
"id": "e6571493ec81ee7fd54038ab3e96bc6c25ed4ad207ceb40397b0416b3f007e90",
"url": "https://osv.dev/vulnerability/CVE-2025-15367",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "POP3 command injection in user-controlled commands",
"summary": "The poplib module, when passed a user-controlled command, can have additional commands injected using newlines. Mitigation rejects commands containing control characters.",
"evidence": "osv:CVE-2025-15367",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2025-15367",
"aliases": [
"BIT-libpython-2025-15367",
"BIT-python-2025-15367",
"BIT-python-min-2025-15367",
"CVE-2025-15367",
"PSF-2026-4"
],
"metrics": [
{
"type": "CVSS_V4",
"score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/python/cpython",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "15b216f30d0445469ec31bc7509fcc55a216ef7c"
},
{
"fixed": "b234a2b67539f787e191d2ef19a7cbdce32874e7"
}
],
"database_specific": {
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{
"range": [
{
"introduced": "0"
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{
"fixed": "3.15.0a6"
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"source": "AFFECTED_FIELD",
"strategy": "StandardRange"
},
{
"range": [
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"source": "REFERENCES_COMMIT"
}
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}
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"v3.1",
"v3.1rc2",
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],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-15367.json"
}
}
],
"modified": "2026-10-28T02:30:42.994381700Z",
"provider": "osv",
"references": [
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/15xxx/CVE-2025-15367.json",
"https://mail.python.org/archives/list/security-announce@python.org/thread/CBFBOWVGGUJFSGITQCCBZS4GEYYZ7ZNE/",
"https://nvd.nist.gov/vuln/detail/CVE-2025-15367",
"https://github.com/python/cpython/issues/143923",
"https://github.com/python/cpython/commit/b234a2b67539f787e191d2ef19a7cbdce32874e7",
"https://github.com/python/cpython/pull/143924",
"https://github.com/python/cpython"
],
"provider_metadata": {
"cwe_ids": [
"CWE-77"
],
"cna_assigner": "PSF",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/15xxx/CVE-2025-15367.json"
}
},
"related_cves": [
{
"value": "CVE-2025-15367",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 510852,
"published_at": "2026-01-20T21:47:09.885+00:00"
}