CVE-2026-54511

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Source
https://cve.org/CVERecord?id=CVE-2026-54511
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-54511.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-54511
Aliases
Published
2026-08-26T14:27:27.910Z
Modified
2026-08-28T03:47:02.903693745Z
Severity
  • 8.6 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N CVSS Calculator
Summary
@logtape/syslog: syslog log injection via unescaped control characters and unvalidated SD-NAME keys
Details

LogTape is an unobtrusive logging library. Prior to 1.3.11, 2.0.14, and 2.1.5, the @logtape/syslog package's escapeStructuredDataValue() function in packages/syslog/src/syslog.ts does not neutralize C0 control characters from U+0000 through U+001F in structured data values, and formatStructuredData() inserts property keys without validating the RFC 5424 SD-NAME grammar. When includeStructuredData is true, an attacker-controlled newline can terminate an RFC 6587 non-transparent TCP syslog frame and make following bytes appear as a forged RFC 5424 record, while a key containing a closing bracket or other forbidden character can terminate or corrupt the structured-data element. Applications that forward attacker-controlled property values or keys can therefore allow forged records with arbitrary hosts, applications, process identifiers, facilities, or severity levels, undermining downstream collector and SIEM integrity. This issue is fixed in versions 1.3.11, 2.0.14, and 2.1.5.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/54xxx/CVE-2026-54511.json",
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-117",
        "CWE-93"
    ]
}
References

Affected packages

Git / github.com/dahlia/logtape

Affected ranges

Type
GIT
Repo
https://github.com/dahlia/logtape
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Introduced
83444eaf5945776cac565e7e40406fe21c24b47c
Introduced
756ef1a06422463b9504d15ecc37eeac486dacf6
Fixed
26297f576f26ed9a33b98ec0acdce474a59dd9ea
Fixed
ca19a5bf4e3498e1ec6f590e9c37fa6bfce1122f
Fixed
046bd33a98f337077eebba49383d5829ef0a64a6
Fixed
7a6e5b9ddf7915edfff78fa129bc17c979b2a623
Database specific
Show details 
{
    "source": [
        "AFFECTED_FIELD",
        "REFERENCES"
    ],
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "1.3.11"
        },
        {
            "introduced": "2.0.0"
        },
        {
            "fixed": "2.0.14"
        },
        {
            "introduced": "2.1.0"
        },
        {
            "fixed": "2.1.5"
        }
    ]
}

Affected versions

0.*
0.1.0
0.10.0
0.11.0
0.12.0
0.2.0
0.3.0
0.4.0
0.5.0
0.6.0
0.7.0
0.8.0
0.9.0
1.*
1.0.0
1.1.0
1.2.0
1.3.0
1.3.1
1.3.10
1.3.2
1.3.3
1.3.4
1.3.5
1.3.6
1.3.7
1.3.8
1.3.9
2.*
2.0.0
2.0.1
2.0.10
2.0.11
2.0.12
2.0.13
2.0.2
2.0.3
2.0.4
2.0.5
2.0.6
2.0.7
2.0.8
2.0.9
2.1.0
2.1.1
2.1.2
2.1.3
2.1.4

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-54511.json"