CVE-2026-27129

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Source
https://cve.org/CVERecord?id=CVE-2026-27129
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-27129.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-27129
Aliases
Related
Published
2026-02-24T02:45:45.494Z
Modified
2026-04-10T05:37:06.092777Z
Severity
  • 5.7 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:P CVSS Calculator
Summary
Cloud Metadata SSRF Protection Bypass via IPv6 Resolution
Details

Craft is a content management system (CMS). In versions 4.5.0-RC1 through 4.16.18 and 5.0.0-RC1 through 5.8.22, the SSRF validation in Craft CMS’s GraphQL Asset mutation uses gethostbyname(), which only resolves IPv4 addresses. When a hostname has only AAAA (IPv6) records, the function returns the hostname string itself, causing the blocklist comparison to always fail and completely bypassing SSRF protection. This is a bypass of the security fix for CVE-2025-68437. Exploitation requires GraphQL schema permissions for editing assets in the <VolumeName> volume and creating assets in the <VolumeName> volume. These permissions may be granted to authenticated users with appropriate GraphQL schema access and/or Public Schema (if misconfigured with write permissions). Versions 4.16.19 and 5.8.23 patch the issue.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/27xxx/CVE-2026-27129.json",
    "cwe_ids": [
        "CWE-918"
    ]
}
References

Affected packages

Git / github.com/craftcms/cms

Affected ranges

Type
GIT
Repo
https://github.com/craftcms/cms
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
1a8db788c8b3de85c3aed09ac34046e230079481
Database specific 
{
    "versions": [
        {
            "introduced": "4.5.0-RC1"
        },
        {
            "fixed": "4.16.19"
        }
    ]
}
Type
GIT
Repo
https://github.com/craftcms/cms
Events
Introduced
04755d93f86d07cc183db47db8a0eee106892e30
Fixed
daf0ed01c7d2c194ba4a405290e43934d020eef2
Database specific 
{
    "versions": [
        {
            "introduced": "5.0.0-RC1"
        },
        {
            "fixed": "5.8.23"
        }
    ]
}

Affected versions

0.*
0.9.2063
0.9.2064
0.9.2065
0.9.2068
0.9.2071
0.9.2078
0.9.2079
0.9.2080
0.9.2081
0.9.2083
0.9.2090
0.9.2094
0.9.2100
0.9.2101
0.9.2102
0.9.2103
0.9.2106
0.9.2116
0.9.2117
0.9.2123
0.9.2124
0.9.2146
0.9.2151
0.9.2157
0.9.2167
0.9.2168
0.9.2177
0.9.2181
0.9.2184
0.9.2189
0.9.2193
0.9.2243
0.9.2246
1.*
1.0.0-alpha.2236
1.0.0-alpha.2237
1.0.0-alpha.2238
1.0.0-alpha.2241
1.0.0-alpha.2242
1.0.0-alpha.2244
1.0.0-alpha.2245
1.0.0-alpha.2247
1.0.0-alpha.2248
1.0.0-alpha.2249
1.0.2266
1.1.0-alpha.2283
1.1.0-alpha.2284
1.1.0-alpha.2285
1.1.0-alpha.2288
1.1.2291
1.2.0-alpha.2310
1.2.0-alpha.2312
1.2.0-alpha.2318
1.2.0-alpha.2319
1.2.0-alpha.2322
1.2.0-alpha.2328
1.2.0-alpha.2329
1.2.2333
1.2.2335
1.2.2336
1.2.2339
1.4.0-alpha.2488
1.4.0-alpha.2489
1.4.0-alpha.2490
1.4.0-alpha.2491
1.4.0-alpha.2492
1.4.0-alpha.2493
1.4.0-alpha.2497
1.4.0-alpha.2498
1.4.0-alpha.2499
1.4.0-alpha.2500
1.4.0-alpha.2502
1.4.0-alpha.2503
1.4.0-alpha.2505
1.4.0-alpha.2509
2.*
2.0.2524
2.0.2525
2.0.2527
2.0.2532
2.0.2533
2.0.2535
2.0.2536
2.0.2537
2.0.2538
2.0.2539
2.1.0-alpha.2546
2.1.0-alpha.2547
2.1.0-alpha.2552
2.1.2554
2.1.2555
2.1.2556
2.1.2557
2.2.0-alpha.2578
2.2.2579
2.2.2581
2.3.0-alpha.2600
2.3.0-alpha.2602
2.3.0-alpha.2603
2.3.0-alpha.2605
2.3.0-alpha.2606
2.3.0-alpha.2608
2.3.0-alpha.2610
2.3.0-alpha.2612
2.3.2615
2.3.2616
2.3.2617
3.*
3.0.0-alpha.2671
3.0.0-alpha.2681
3.0.0-alpha.2687
3.0.0-alpha.2915
3.0.0-alpha.2918
3.0.0-alpha.2928
3.0.0-alpha.2933
3.0.0-alpha.2937
3.0.0-alpha.2939
3.0.0-alpha.2942
3.0.0-alpha.2948
4.*
4.10.0-beta.1
4.10.0-beta.2
4.11.0
4.11.0.1
4.11.0.2
4.12.0
4.13.0
4.13.1
4.13.1.1
4.13.10
4.13.2
4.13.3
4.13.4
4.13.5
4.13.6
4.13.8
4.13.9
4.14.0
4.14.0.1
4.14.0.2
4.14.1
4.14.10
4.14.11
4.14.11.1
4.14.12
4.14.13
4.14.14
4.14.15
4.14.2
4.14.3
4.14.4
4.14.5
4.14.6
4.14.7
4.14.8
4.14.8.1
4.14.9
4.15.0
4.15.0.1
4.15.0.2
4.15.1
4.15.2
4.15.3
4.15.4
4.15.5
4.15.6
4.15.6.1
4.15.6.2
4.15.7
4.16.0
4.16.1
4.16.10
4.16.11
4.16.12
4.16.13
4.16.14
4.16.15
4.16.16
4.16.17
4.16.18
4.16.2
4.16.3
4.16.4
4.16.5
4.16.6
4.16.6.1
4.16.7
4.16.8
4.16.9
4.16.9.1
4.8.10
4.8.11
4.8.6
4.8.7
4.8.8
4.8.9
@craftcms/sass@1.*
@craftcms/sass@1.0.0
@craftcms/sass@1.0.1
@craftcms/webpack@0.*
@craftcms/webpack@0.0.1
@craftcms/webpack@0.2.0
@craftcms/webpack@0.3.0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-27129.json"