CVE-2026-63670

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Source
https://cve.org/CVERecord?id=CVE-2026-63670
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-63670.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-63670
Aliases
Downstream
Published
2026-08-17T19:49:51Z
Modified
2026-09-11T03:30:44Z
Severity
  • 6.1 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N CVSS Calculator
Summary
ApostropheCMS: Mutation-XSS / allowedTags bypass via literal `</textarea/>` solidus close
Details

ApostropheCMS is an open-source Node.js content management system. Prior to 2.17.6, sanitizeHtml() can pass disallowed executable markup through packages/sanitize-html/index.js when textarea or xmp is included in allowedTags because a literal solidus after the raw-text end-tag name is treated as text by htmlparser2 and the ontext handler emits that content without escaping, while a browser parses the following img onerror markup as active HTML. This issue is fixed in version 2.17.6.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-79"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/63xxx/CVE-2026-63670.json"
}
References

Affected packages

Git / github.com/apostrophecms/apostrophe

Affected ranges

Type
GIT
Repo
https://github.com/apostrophecms/apostrophe
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
eae1fb2b72ec5d1c27d0977509c6482a0408f725
Database specific
Show details 
{
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "2.17.6"
        }
    ],
    "source": [
        "AFFECTED_FIELD",
        "REFERENCES"
    ]
}

Affected versions

0.*
0.1.1
0.1.10
0.1.11
0.1.12
0.1.13
0.1.14
0.1.2
0.1.3
0.1.4
0.1.5
0.1.6
0.1.7
0.1.8
0.1.9
0.2.0
0.3.0
0.3.1
0.3.10
0.3.11
0.3.12
0.3.15
0.3.16
0.3.18
0.3.19
0.3.2
0.3.3
0.3.4
0.3.5
0.3.6
0.3.7
0.3.8
0.3.9
0.4.1
0.4.10
0.4.100
0.4.101
0.4.102
0.4.104
0.4.11
0.4.110
0.4.111
0.4.112
0.4.113
0.4.114
0.4.115
0.4.116
0.4.117
0.4.118
0.4.119
0.4.12
0.4.120
0.4.121
0.4.122
0.4.123
0.4.124
0.4.125
0.4.13
0.4.14
0.4.15
0.4.16
0.4.18
0.4.184
0.4.19
0.4.2
0.4.20
0.4.21
0.4.22
0.4.23
0.4.24
0.4.25
0.4.26
0.4.27
0.4.28
0.4.29
0.4.3
0.4.30
0.4.31
0.4.32
0.4.33
0.4.34
0.4.35
0.4.37
0.4.4
0.4.40
0.4.41
0.4.42
0.4.43
0.4.44
0.4.45
0.4.46
0.4.47
0.4.5
0.4.51
0.4.52
0.4.53
0.4.54
0.4.55
0.4.57
0.4.58
0.4.59
0.4.6
0.4.60
0.4.61
0.4.62
0.4.63
0.4.64
0.4.65
0.4.66
0.4.67
0.4.68
0.4.69
0.4.7
0.4.70
0.4.71
0.4.72
0.4.73
0.4.74
0.4.75
0.4.8
0.4.82
0.4.83
0.4.84
0.4.85
0.4.86
0.4.87
0.4.88
0.4.89
0.4.90
0.4.91
0.4.92
0.4.93
0.4.94
0.4.95
0.4.96
0.4.97
0.4.98
0.4.99
0.5.0
0.5.1
0.5.10
0.5.100
0.5.102
0.5.103
0.5.104
0.5.106
0.5.107
0.5.108
0.5.109
0.5.111
0.5.113
0.5.115
0.5.116
0.5.117
0.5.12
0.5.120
0.5.121
0.5.124
0.5.125
0.5.126
0.5.127
0.5.128
0.5.13
0.5.130
0.5.131
0.5.133
0.5.134
0.5.135
0.5.136
0.5.138
0.5.14
0.5.141
0.5.142
0.5.143
0.5.144
0.5.145
0.5.146
0.5.148
0.5.149
0.5.150
0.5.151
0.5.155
0.5.156
0.5.157
0.5.158
0.5.159
0.5.16
0.5.165
0.5.167
0.5.168
0.5.169
0.5.17
0.5.178
0.5.179
0.5.180
0.5.181
0.5.183
0.5.187
0.5.188
0.5.189
0.5.19
0.5.190
0.5.191
0.5.192
0.5.193
0.5.194
0.5.197
0.5.198
0.5.199
0.5.2
0.5.20
0.5.201
0.5.202
0.5.203
0.5.204
0.5.205
0.5.206
0.5.207
0.5.208
0.5.21
0.5.213
0.5.215
0.5.216
0.5.217
0.5.218
0.5.219
0.5.22
0.5.221
0.5.222
0.5.223
0.5.224
0.5.226
0.5.227
0.5.228
0.5.229
0.5.23
0.5.230
0.5.24
0.5.240
0.5.241
0.5.242
0.5.244
0.5.245
0.5.246
0.5.247
0.5.248
0.5.249
0.5.25
0.5.250
0.5.251
0.5.252
0.5.253
0.5.254
0.5.26
0.5.269
0.5.27
0.5.270
0.5.271
0.5.272
0.5.273
0.5.275
0.5.276
0.5.278
0.5.279
0.5.28
0.5.280
0.5.281
0.5.282
0.5.283
0.5.284
0.5.285
0.5.286
0.5.287
0.5.288
0.5.29
0.5.290
0.5.291
0.5.292
0.5.293
0.5.294
0.5.296
0.5.297
0.5.298
0.5.3
0.5.30
0.5.300
0.5.301
0.5.302
0.5.303
0.5.305
0.5.307
0.5.308
0.5.309
0.5.31
0.5.310
0.5.311
0.5.312
0.5.32
0.5.327
0.5.328
0.5.33
0.5.330
0.5.331
0.5.332
0.5.333
0.5.336
0.5.337
0.5.338
0.5.339
0.5.34
0.5.340
0.5.343
0.5.344
0.5.345
0.5.346
0.5.347
0.5.348
0.5.349
0.5.35
0.5.350
0.5.351
0.5.352
0.5.353
0.5.354
0.5.355
0.5.356
0.5.357
0.5.358
0.5.359
0.5.36
0.5.360
0.5.361
0.5.362
0.5.363
0.5.364
0.5.365
0.5.366
0.5.367
0.5.368
0.5.369
0.5.37
0.5.370
0.5.371
0.5.372
0.5.373
0.5.374
0.5.375
0.5.376
0.5.377
0.5.378
0.5.379
0.5.38
0.5.380
0.5.381
0.5.382
0.5.383
0.5.384
0.5.39
0.5.4
0.5.40
0.5.43
0.5.44
0.5.45
0.5.47
0.5.48
0.5.5
0.5.50
0.5.51
0.5.52
0.5.55
0.5.56
0.5.57
0.5.58
0.5.59
0.5.6
0.5.60
0.5.61
0.5.63
0.5.64
0.5.65
0.5.67
0.5.68
0.5.69
0.5.7
0.5.70
0.5.71
0.5.75
0.5.76
0.5.77
0.5.78
0.5.79
0.5.8
0.5.82
0.5.84
0.5.85
0.5.86
0.5.88
0.5.89
0.5.9
0.5.90
0.5.91
0.5.92
0.5.93
0.5.94
0.5.95
0.5.96
0.5.97
0.5.98
0.5.99
2.*
2.0.1
2.0.2
2.0.3
2.0.4
2.1.1
2.1.2
2.1.3
2.10.0
2.10.1
2.10.2
2.10.3
2.11.0
2.12.0
2.13.0
2.13.1
2.13.2
2.14.0
2.14.1
2.14.2
2.15.0
2.15.1
2.15.2
2.16.0
2.16.1
2.17.0
2.17.1
2.17.2
2.18.0
2.18.1
2.18.2
2.19.0
2.19.1
2.20.1
2.20.2
2.20.3
2.22.0
2.23.0
2.23.1
2.23.2
2.24.0
2.25.0
2.25.1
2.26.0
2.26.1
2.27.0
2.27.1
2.28.0
2.29.0
2.29.1
2.29.2
2.30.0
2.31.0
2.31.1
2.32.0
2.33.0
2.33.1
2.34.0
2.34.1
2.34.2
2.34.3
2.35.0
2.35.1
2.36.0
2.36.1
2.36.2
2.36.3
2.38.0
2.39.0
2.39.1
2.39.2
2.40.0
2.41.0
2.42.0
2.42.1
2.43.0
2.44.0
2.45.0
2.46.0
2.46.1
2.47.0
2.48.0
2.49.0
2.50.0
2.51.0
2.51.1
2.52.0
2.53.0
2.54.0
2.54.1
2.54.2
2.54.3
2.55.0
2.56.0
2.57.0
2.58.0
2.59.0
2.59.1
2.6.1
2.6.2
2.60.0
2.60.1
2.60.2
2.60.3
2.60.4
2.62.0
2.63.0
2.64.0
2.64.1
2.65.0
2.66.0
2.67.0
2.7.0
2.8.0
2.9.0
2.9.1
2.9.2
3.*
3.0.0
3.0.0-alpha.1
3.0.0-alpha.2
3.0.0-alpha.3
3.0.0-alpha.4
3.0.0-alpha.4.2
3.0.0-alpha.5
3.0.0-alpha.6.1
3.0.0-alpha.7
3.0.0-beta.1
3.0.0-beta.1.1
3.0.0-beta.2
3.0.0-beta.3
3.0.1
3.1.0
3.1.2
3.11.0
3.12.0
3.13.0
3.14.0
3.14.1
3.14.2
3.15.0
3.16.0
3.16.1
3.17.0
3.18.0
3.19.0
3.2.0
3.21.0
3.22.0
3.23.0
3.24.0
3.25.0
3.26.0
3.26.1
3.27.0
3.28.0
3.28.1
3.29.0
3.3.0
3.30.0
3.31.0
3.32.0
3.33.0
3.34.0
3.35.0
3.36.0
3.37.0
3.38.0
3.38.1
3.39.0
3.39.2
3.4.0
3.4.1
3.40.0
3.40.1
3.41.1
3.42.0
3.43.0
3.44.0
3.45.0
3.46.0
3.47.0
3.48.0
3.49.0
3.5.0
3.50.0
3.51.0
3.51.1
3.52.0
3.53.0
3.54.0
3.55.0
3.56.0
3.57.0
3.58.0
3.58.1
3.59.0
3.6.0
3.60.0
3.60.1
3.61.0
3.62.0
3.63.1
3.7.0
3.8.0
3.8.1
3.9.0
4.*
4.0.0
4.1.0
4.1.1
4.10.0
4.11.0
4.11.2
4.12.0
4.13.0
4.14.0
4.15.0
4.16.0
4.17.0
4.17.1
4.18.0
4.19.0
4.2.0
4.20.0
4.21.0
4.22.0
4.23.0
4.24.0
4.3.0
4.4.0
4.4.1
4.4.2
4.4.3
4.5.0
4.5.2
4.5.3
4.6.0
4.7.0
4.8.0
4.9.0
@apostrophecms/ai-helper@1.*
@apostrophecms/ai-helper@1.0.0-beta.11
@apostrophecms/apostrophe-astro@1.*
@apostrophecms/apostrophe-astro@1.10.0
@apostrophecms/apostrophe-astro@1.11.0
@apostrophecms/apostrophe-astro@1.8.0
@apostrophecms/apostrophe-astro@1.9.0
@apostrophecms/cli@3.*
@apostrophecms/cli@3.6.0
@apostrophecms/form@1.*
@apostrophecms/form@1.5.3
@apostrophecms/import-export@3.*
@apostrophecms/import-export@3.5.1
@apostrophecms/import-export@3.5.2
@apostrophecms/import-export@3.5.3
@apostrophecms/import-export@3.6.0
@apostrophecms/login-totp@1.*
@apostrophecms/login-totp@1.3.3
@apostrophecms/openapi-generator@1.*
@apostrophecms/openapi-generator@1.0.0
@apostrophecms/seo@1.*
@apostrophecms/seo@1.4.0
@apostrophecms/seo@1.4.1
@apostrophecms/seo@1.4.2
@apostrophecms/sitemap@1.*
@apostrophecms/sitemap@1.3.0
@apostrophecms/sitemap@1.4.0
apostrophe@4.*
apostrophe@4.25.0
apostrophe@4.26.0
apostrophe@4.28.0
apostrophe@4.29.0
apostrophecms-openapi@1.*
apostrophecms-openapi@1.1.0
postcss-viewport-to-container-toggle@2.*
postcss-viewport-to-container-toggle@2.2.0
postcss-viewport-to-container-toggle@2.3.0
sanitize-html@2.*
sanitize-html@2.17.1
sanitize-html@2.17.2
sanitize-html@2.17.3
uploadfs@1.*
uploadfs@1.26.1
v0.*
v0.4.68

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-63670.json"