CVE-2026-42345

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Source
https://cve.org/CVERecord?id=CVE-2026-42345
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-42345.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-42345
Aliases
  • GHSA-jhqw-944x-xh94
Published
2026-05-08T22:11:09.630Z
Modified
2026-07-27T03:56:33.927219059Z
Severity
  • 7.7 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N CVSS Calculator
Summary
FastGPT: Cloud metadata endpoint SSRF protection bypass via port specification, IPv6 mapping, hex/decimal IP encoding, and trailing dot
Details

FastGPT is an AI Agent building platform. In versions 4.14.11 and prior, FastGPT's isInternalAddress() function in packages/service/common/system/utils.ts blocks cloud metadata endpoints using a fullUrl.startsWith() check against a hardcoded list. This check can be bypassed using at least 7 different URL encoding techniques, all of which resolve to the same cloud metadata service but do not match the blocklist patterns. Additionally, the broader private IP check (isInternalIPv4/isInternalIPv6) is disabled by default because CHECKINTERNALIP defaults to false (not 'true'), so these bypasses reach the metadata endpoint without any further validation. At time of publication, there are no publicly available patches.

Database specific 
{
    "cwe_ids": [
        "CWE-918"
    ],
    "cna_assigner": "GitHub_M",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/42xxx/CVE-2026-42345.json"
}
References

Affected packages

Git / github.com/labring/fastgpt

Affected ranges

Type
GIT
Repo
https://github.com/labring/fastgpt
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Last affected
025b3dacab7dbcf7cadf515dbf78571f786921a4
Database specific 
{
    "source": "AFFECTED_FIELD",
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "last_affected": "4.14.11"
        }
    ]
}

Affected versions

4.*
4.8.9-alpha
Other
delete
v0.*
v0.9
v1.*
v1.2
v1.4
v2.*
v2.0
v2.1
v2.2
v2.3
v2.4
v2.5
v2.6
v2.7
v2.7.1
v2.7.2
v2.8
v2.8.5
v2.9
v3.*
v3.0
v3.1
v3.2
v3.3
v3.4
v3.5
v3.7
v3.7.1
v3.7.3
v3.8
v3.8.1
v3.8.3
v3.8.4
v3.8.5
v3.8.6
v3.8.7
v3.8.8
v3.8.9
v3.9
v3.9.1
v3.9.2
v3.9.3
v3.9.4
v4.*
v4.0-beta
v4.10.0
v4.10.0-fix
v4.10.1
v4.10.1-alpha
v4.10.1-fix
v4.10.1-fix2
v4.10.1-fix3
v4.11.0
v4.11.1
v4.11.1-fix
v4.11.1-fix2
v4.11.1-fix3
v4.12.0
v4.12.1
v4.12.1-fix
v4.12.2
v4.12.2-fix
v4.12.2-fix2
v4.12.2-fix3
v4.12.3
v4.12.4
v4.13.0
v4.13.0-fix
v4.13.1
v4.13.2
v4.14.0
v4.14.0-fix
v4.14.1
v4.14.10.1
v4.14.10.2
v4.14.10.3
v4.14.10.4
v4.14.11
v4.14.2
v4.14.2-fix
v4.14.3
v4.14.4
v4.14.4-cve
v4.14.5-fix
v4.14.5.1
v4.14.6
v4.14.6.1
v4.14.7
v4.14.7.1
v4.14.7.2
v4.14.8
v4.14.8.1
v4.14.8.2
v4.14.8.3
v4.14.9
v4.14.9.1
v4.14.9.2
v4.14.9.3
v4.14.9.4
v4.14.9.5
v4.2
v4.2.1
v4.2.2
v4.3
v4.4.2
v4.4.4
v4.4.5
v4.4.6
v4.4.7
v4.5
v4.5.1
v4.5.2
v4.6
v4.6.1
v4.6.1-alpha
v4.6.2
v4.6.2-alpha
v4.6.3
v4.6.3-alpha
v4.6.4
v4.6.4-alpha
v4.6.5
v4.6.5-alpha
v4.6.5-alpha2
v4.6.6
v4.6.6-alpha
v4.6.6-alpha2
v4.6.7
v4.6.7-alpha
v4.6.7-fix
v4.6.8
v4.6.8-alpha
v4.6.9
v4.6.9-alpha
v4.6.9-alpha2
v4.7
v4.7-alpha
v4.7-alpha2
v4.7-alpha3
v4.7.1
v4.7.1-alpha
v4.7.1-alpha2
v4.7.1-alpha3
v4.7.1-fix
v4.7.1-fix2
v4.8
v4.8-alpha
v4.8-alpha2
v4.8-alpha3
v4.8-preview
v4.8-preview2
v4.8-preview3
v4.8-preview4
v4.8.1
v4.8.1-alpha
v4.8.10
v4.8.10-alpha
v4.8.10-alpha2
v4.8.10-fix
v4.8.10-fix2
v4.8.11
v4.8.11-alpha
v4.8.11-alpha2
v4.8.11-beta
v4.8.11-fix
v4.8.12
v4.8.12-alpha
v4.8.12-beta
v4.8.12-fix
v4.8.13
v4.8.13-fix
v4.8.14
v4.8.14-alpha
v4.8.14-fix
v4.8.14-milvus-fix
v4.8.15
v4.8.15-alpha
v4.8.15-alpha2
v4.8.15-alpha3
v4.8.15-fix
v4.8.15-fix-emb-page
v4.8.15-fix2
v4.8.15-fix3
v4.8.16
v4.8.16-alpha
v4.8.16-beta
v4.8.17
v4.8.17-alpha
v4.8.17-fix-title
v4.8.18
v4.8.18-fix
v4.8.18-fix2
v4.8.19
v4.8.19-beta
v4.8.2
v4.8.20-fix
v4.8.20-fix2
v4.8.21
v4.8.21-fix
v4.8.22
v4.8.22-alpha
v4.8.23
v4.8.23-alpha
v4.8.23-fix
v4.8.23-fix2
v4.8.3
v4.8.4
v4.8.4-alpha
v4.8.4-fix
v4.8.5
v4.8.5-alpha
v4.8.6
v4.8.6-alpha
v4.8.6-alpha2
v4.8.7
v4.8.7-alpha
v4.8.7-alpha2
v4.8.8
v4.8.8-alpha
v4.8.8-alpha2
v4.8.8-fix
v4.8.8-fix2
v4.8.9
v4.8.9-alpha
v4.8.9-test
v4.9.0
v4.9.0-fix
v4.9.0-fix2
v4.9.1-fix
v4.9.1-fix2
v4.9.10
v4.9.10-alpha
v4.9.10-fix
v4.9.10-fix2
v4.9.11
v4.9.11-alpha
v4.9.12
v4.9.12-alpha
v4.9.13
v4.9.14
v4.9.14-fix
v4.9.2
v4.9.3
v4.9.4
v4.9.5
v4.9.5-alpha
v4.9.6
v4.9.6-alpha
v4.9.7
v4.9.7-alpha
v4.9.7-fix
v4.9.7-fix2
v4.9.8
v4.9.8-alpha
v4.9.9
v4.9.9-alpha

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-42345.json"