CVE-2026-108903 (GCVE-0-2026-108903)
Vulnerability from cvelistv5 – Published: 2026-10-11 14:58 – Updated: 2026-10-11 14:58
VLAI
EPSS
VEX
Title
pH7Builder before 19.3.0 CAPTCHA Bypass via Client-Chosen Form ID
Summary
pH7Builder (pH7 Social Dating CMS) before 19.3.0 contains a CAPTCHA bypass vulnerability that allows unauthenticated attackers to skip form validation by supplying a client-chosen form ID to PFBC Form::isValid(). Attackers can load a CAPTCHA-free form like login or search, then submit its ID with contact, comment, forum, invite or signup data to automate abuse.
Severity
5.3 (Medium)
CWE
- CWE-807 - Reliance on Untrusted Inputs in a Security Decision
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/pH7Software/pH7-Social-Dating-… | patch |
| https://github.com/pH7Software/pH7-Social-Dating-… | technical-description |
| https://github.com/pH7Software/pH7-Social-Dating-CMS | product |
| https://www.vulncheck.com/advisories/ph7builder-b… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| ph7software | ph7builder |
Affected:
0 , < 19.3.0
(semver)
Unaffected: 19.3.0 (semver) |
guessed |
Date Public
2026-09-21 00:00
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}
],
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},
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},
{
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],
"url": "https://github.com/pH7Software/pH7-Social-Dating-CMS"
},
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"dateReserved": "2026-10-11T14:47:10.598Z",
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"state": "PUBLISHED"
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}
],
"id": "CVE-2026-108903",
"lastModified": "2026-10-11T15:16:56.600",
"metrics": {
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},
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}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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