CVE-2026-102277

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Source
https://cve.org/CVERecord?id=CVE-2026-102277
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-102277.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-102277
Aliases
Downstream
CGA (296)
DEBIAN (1)
MINI (18)
UBUNTU (1)
Published
2026-09-28T20:54:46Z
Modified
2026-09-30T11:30:19Z
Severity
  • 5.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L CVSS Calculator
Summary
brace-expansion: Quadratic-time expansion of the `{a},b}` rewrite causes CPU denial of service
Details

The brace-expansion library generates arbitrary strings containing a common prefix and suffix. Prior to 1.1.21, 2.1.7, 3.0.9, and 5.0.12, the expand function handles untrusted {a},b}-shaped patterns with many trailing closing braces by restarting its scan once for each trailing closing brace. The successive full-input rescans with linear working-string growth cause quadratic CPU time and memory pressure that can block the Node.js event loop. The process eventually recovers, making the impact a recoverable CPU denial of service. This issue is fixed in versions 1.1.21, 2.1.7, 3.0.9, and 5.0.12.

Database specific 
{
    "cna_assigner":  "GitHub_M",
    "cwe_ids":  [
        "CWE-400",
        "CWE-407"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/102xxx/CVE-2026-102277.json"
}
References

Affected packages

Git / github.com/juliangruber/brace-expansion

Affected ranges

Type
GIT
Repo
https://github.com/juliangruber/brace-expansion
Events
Introduced
6a39bdddcf944374b475d99b0e8292d3727c7ebe
Introduced
b01a637b0578a7c59acc7d8386f11f8d0710b512
Introduced
0b6a022491103b806770bc037654744bef3e63be
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
f3410159d768f56c9d9f4511d3e1b46425fc1099
Fixed
0e89da53eb15d78441254fab28a60e3a1da4b76d
Fixed
714b6228a5878cfc6b07dc319db0eb6376ab2c4d
Fixed
8e81e187b6e9c6c723d16c042657c00acefc2483
Fixed
33a5ef17b8d800bbfa8c52b14c39043b6aac1a96
Fixed
bdff773f98e5988616b7039cc9b508df5d640b22
Fixed
c55e67d8d8b1c56a2474afff15c2891166b2d364
Fixed
ffdfa3e3806bed17c0874b8f1439b084de354a7e
Database specific
Show details 
{
    "extracted_events":  [
        {
            "introduced":  "4.0.0"
        },
        {
            "fixed":  "5.0.12"
        },
        {
            "introduced":  "3.0.0"
        },
        {
            "fixed":  "3.0.9"
        },
        {
            "introduced":  "2.0.0"
        },
        {
            "fixed":  "2.1.7"
        },
        {
            "introduced":  "0"
        },
        {
            "fixed":  "1.1.21"
        }
    ],
    "source":  [
        "AFFECTED_FIELD",
        "REFERENCES"
    ]
}

Affected versions

v1.*
v1.0.0
v1.0.1
v1.1.0
v1.1.1
v1.1.10
v1.1.11
v1.1.12
v1.1.13
v1.1.14
v1.1.15
v1.1.16
v1.1.17
v1.1.18
v1.1.19
v1.1.2
v1.1.20
v1.1.3
v1.1.4
v1.1.5
v1.1.6
v1.1.7
v1.1.8
v1.1.9
v2.*
v2.0.0
v2.0.1
v2.0.2
v2.0.3
v2.1.0
v2.1.1
v2.1.2
v2.1.3
v2.1.4
v2.1.5
v2.1.6
v3.*
v3.0.0
v3.0.1
v3.0.2
v3.0.3
v3.0.4
v3.0.6
v3.0.7
v3.0.8
v4.*
v4.0.0
v4.0.1
v5.*
v5.0.10
v5.0.11
v5.0.2
v5.0.3
v5.0.4
v5.0.5
v5.0.6
v5.0.7
v5.0.8
v5.0.9

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-102277.json"