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12 vulnerabilities found for OpenSign by OpenSignLabs
CVE-2026-92794 (GCVE-0-2026-92794)
Vulnerability from nvd – Published: 2026-09-16 20:32 – Updated: 2026-09-17 19:24
VLAI
EPSS
VEX
Title
OpenSign through 2.41.3 Information Disclosure via getDocument
Summary
OpenSign through 2.41.3 fails to validate caller identity in the getDocument cloud function when one-time-password verification is disabled. Attackers can supply a document identifier from guest signing links to retrieve complete document details including all signers' information, sender identity, and valid download tokens without authentication.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-17 19:15 UTC
CWE
- CWE-862 - Missing Authorization
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/OpenSignLabs/OpenSign/issues/2218 | issue-tracking |
| https://github.com/OpenSignLabs/OpenSign | product |
| https://github.com/OpenSignLabs/OpenSign/blob/v2.… | technical-description |
| https://www.vulncheck.com/advisories/opensign-thr… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| OpenSignLabs | OpenSign |
Affected:
0 , ≤ 2.41.3
(semver)
|
Date Public
2026-07-15 00:00
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CVE-2026-72549 (GCVE-0-2026-72549)
Vulnerability from nvd – Published: 2026-08-11 11:10 – Updated: 2026-08-11 15:09
VLAI
EPSS
VEX
Title
OpenSignLabs OpenSign - Information Disclosure
Summary
An information disclosure vulnerability in OpenSignLabs OpenSign through 2.37.0 allows unauthenticated remote attackers to map any email address or username to its internal user objectId via the getUserId Parse cloud function. The function performs no authentication before resolving and returning the internal identifier. An attacker can use this to enumerate user accounts and target subsequent attacks.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-11 15:09 UTC
CWE
- CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| OpenSignLabs | OpenSign |
Affected:
0 , ≤ 2.37.0
(custom)
|
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CVE-2026-72548 (GCVE-0-2026-72548)
Vulnerability from nvd – Published: 2026-08-11 11:09 – Updated: 2026-08-11 15:10
VLAI
EPSS
VEX
Title
OpenSignLabs OpenSign - Information Disclosure
Summary
An information disclosure vulnerability in OpenSignLabs OpenSign through 2.37.0 allows unauthenticated remote attackers to retrieve any organisation tenant record via the gettenant Parse cloud function. The function accepts a contactId parameter and returns the full tenant record without authentication or authorization checks. An attacker can enumerate and disclose tenant configuration data for any organisation in the system.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-11 15:10 UTC
CWE
- CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| OpenSignLabs | OpenSign |
Affected:
0 , ≤ 2.37.0
(custom)
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CVE-2026-72545 (GCVE-0-2026-72545)
Vulnerability from nvd – Published: 2026-08-11 11:09 – Updated: 2026-08-11 15:07
VLAI
EPSS
VEX
Title
OpenSignLabs OpenSign - Insecure Direct Object Reference
Summary
An insecure direct object reference vulnerability in OpenSignLabs OpenSign through 2.37.0 allows unauthenticated remote attackers to write to any contact record via the updatecontacttour Parse cloud function. The function performs no authentication or authorization before updating the target contact record. An attacker can corrupt or overwrite contact data for any user in the system without credentials.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-11 15:07 UTC
CWE
- CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| OpenSignLabs | OpenSign |
Affected:
0 , ≤ 2.37.0
(custom)
|
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CVE-2026-72544 (GCVE-0-2026-72544)
Vulnerability from nvd – Published: 2026-08-11 11:09 – Updated: 2026-08-11 12:24
VLAI
EPSS
VEX
Title
OpenSignLabs OpenSign - Insufficient Verification of Data Authenticity
Summary
An integrity verification vulnerability in OpenSignLabs OpenSign through 2.37.0 allows unauthenticated remote attackers to forge document audit-trail entries via the triggerevent Parse cloud function. The function accepts viewer identity and IP address as caller-supplied parameters without authentication, allowing fabrication of arbitrary audit log entries. An attacker can tamper with the legal audit trail of any signed document, undermining non-repudiation.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-11 12:24 UTC
CWE
- CWE-345 - Insufficient Verification of Data Authenticity
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| OpenSignLabs | OpenSign |
Affected:
0 , ≤ 2.37.0
(custom)
|
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CVE-2026-72543 (GCVE-0-2026-72543)
Vulnerability from nvd – Published: 2026-08-11 11:08 – Updated: 2026-08-11 14:48
VLAI
EPSS
VEX
Title
OpenSignLabs OpenSign - Insecure Direct Object Reference
Summary
An insecure direct object reference vulnerability in OpenSignLabs OpenSign through 2.37.0 allows unauthenticated remote attackers to retrieve any contact record via the getcontact Parse cloud function. The function executes with useMasterKey and performs no authentication or authorization checks before returning the requested contact object. An attacker can enumerate and read all contact records including personally identifiable information without credentials.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-11 14:47 UTC
CWE
- CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
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| OpenSignLabs | OpenSign |
Affected:
0 , ≤ 2.37.0
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CVE-2026-92794 (GCVE-0-2026-92794)
Vulnerability from cvelistv5 – Published: 2026-09-16 20:32 – Updated: 2026-09-17 19:24
VLAI
EPSS
VEX
Title
OpenSign through 2.41.3 Information Disclosure via getDocument
Summary
OpenSign through 2.41.3 fails to validate caller identity in the getDocument cloud function when one-time-password verification is disabled. Attackers can supply a document identifier from guest signing links to retrieve complete document details including all signers' information, sender identity, and valid download tokens without authentication.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-17 19:15 UTC
CWE
- CWE-862 - Missing Authorization
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/OpenSignLabs/OpenSign/issues/2218 | issue-tracking |
| https://github.com/OpenSignLabs/OpenSign | product |
| https://github.com/OpenSignLabs/OpenSign/blob/v2.… | technical-description |
| https://www.vulncheck.com/advisories/opensign-thr… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| OpenSignLabs | OpenSign |
Affected:
0 , ≤ 2.41.3
(semver)
|
Date Public
2026-07-15 00:00
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CVE-2026-72549 (GCVE-0-2026-72549)
Vulnerability from cvelistv5 – Published: 2026-08-11 11:10 – Updated: 2026-08-11 15:09
VLAI
EPSS
VEX
Title
OpenSignLabs OpenSign - Information Disclosure
Summary
An information disclosure vulnerability in OpenSignLabs OpenSign through 2.37.0 allows unauthenticated remote attackers to map any email address or username to its internal user objectId via the getUserId Parse cloud function. The function performs no authentication before resolving and returning the internal identifier. An attacker can use this to enumerate user accounts and target subsequent attacks.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-11 15:09 UTC
CWE
- CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| OpenSignLabs | OpenSign |
Affected:
0 , ≤ 2.37.0
(custom)
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CVE-2026-72548 (GCVE-0-2026-72548)
Vulnerability from cvelistv5 – Published: 2026-08-11 11:09 – Updated: 2026-08-11 15:10
VLAI
EPSS
VEX
Title
OpenSignLabs OpenSign - Information Disclosure
Summary
An information disclosure vulnerability in OpenSignLabs OpenSign through 2.37.0 allows unauthenticated remote attackers to retrieve any organisation tenant record via the gettenant Parse cloud function. The function accepts a contactId parameter and returns the full tenant record without authentication or authorization checks. An attacker can enumerate and disclose tenant configuration data for any organisation in the system.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-11 15:10 UTC
CWE
- CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| OpenSignLabs | OpenSign |
Affected:
0 , ≤ 2.37.0
(custom)
|
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CVE-2026-72545 (GCVE-0-2026-72545)
Vulnerability from cvelistv5 – Published: 2026-08-11 11:09 – Updated: 2026-08-11 15:07
VLAI
EPSS
VEX
Title
OpenSignLabs OpenSign - Insecure Direct Object Reference
Summary
An insecure direct object reference vulnerability in OpenSignLabs OpenSign through 2.37.0 allows unauthenticated remote attackers to write to any contact record via the updatecontacttour Parse cloud function. The function performs no authentication or authorization before updating the target contact record. An attacker can corrupt or overwrite contact data for any user in the system without credentials.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-11 15:07 UTC
CWE
- CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| OpenSignLabs | OpenSign |
Affected:
0 , ≤ 2.37.0
(custom)
|
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CVE-2026-72544 (GCVE-0-2026-72544)
Vulnerability from cvelistv5 – Published: 2026-08-11 11:09 – Updated: 2026-08-11 12:24
VLAI
EPSS
VEX
Title
OpenSignLabs OpenSign - Insufficient Verification of Data Authenticity
Summary
An integrity verification vulnerability in OpenSignLabs OpenSign through 2.37.0 allows unauthenticated remote attackers to forge document audit-trail entries via the triggerevent Parse cloud function. The function accepts viewer identity and IP address as caller-supplied parameters without authentication, allowing fabrication of arbitrary audit log entries. An attacker can tamper with the legal audit trail of any signed document, undermining non-repudiation.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-11 12:24 UTC
CWE
- CWE-345 - Insufficient Verification of Data Authenticity
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| OpenSignLabs | OpenSign |
Affected:
0 , ≤ 2.37.0
(custom)
|
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CVE-2026-72543 (GCVE-0-2026-72543)
Vulnerability from cvelistv5 – Published: 2026-08-11 11:08 – Updated: 2026-08-11 14:48
VLAI
EPSS
VEX
Title
OpenSignLabs OpenSign - Insecure Direct Object Reference
Summary
An insecure direct object reference vulnerability in OpenSignLabs OpenSign through 2.37.0 allows unauthenticated remote attackers to retrieve any contact record via the getcontact Parse cloud function. The function executes with useMasterKey and performs no authentication or authorization checks before returning the requested contact object. An attacker can enumerate and read all contact records including personally identifiable information without credentials.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-11 14:47 UTC
CWE
- CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| OpenSignLabs | OpenSign |
Affected:
0 , ≤ 2.37.0
(custom)
|
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