fossasia open-event-server 1.19.1 Mail Verification mail.py send_email_change_user_email reliance on obfuscation or encryption of security-relevant inputs without integrity checking
Summary
A vulnerability, which was classified as critical, has been found in fossasia open-event-server 1.19.1. The impacted element is the function send_email_change_user_email of the file /fossasia/open-event-server/blob/development/app/api/helpers/mail.py of the component Mail Verification Handler. The manipulation leads to reliance on obfuscation or encryption of security-relevant inputs without integrity checking.
This vulnerability is listed as CVE-2025-5323. The attack may be initiated remotely. In addition, an exploit is available.
The vendor was contacted early about this disclosure but did not respond in any way.
Details
A vulnerability, which was classified as problematic, has been found in fossasia open-event-server 1.19.1. This issue affects the function send_email_change_user_email of the file /fossasia/open-event-server/blob/development/app/api/helpers/mail.py of the component Mail Verification Handler. The manipulation with an unknown input leads to a reliance on obfuscation or encryption of security-relevant inputs without integrity checking vulnerability. Using CWE to declare the problem leads to CWE-649. The product uses obfuscation or encryption of inputs that should not be mutable by an external actor, but the product does not use integrity checks to detect if those inputs have been modified. Impacted is integrity.
The advisory is shared at gist.github.com. The identification of this vulnerability is CVE-2025-5323. The exploitation is known to be difficult. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details as well as a public exploit are known.
The exploit is available at gist.github.com. It is declared as proof-of-concept. The vendor was contacted early about this disclosure but did not respond in any way.
There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.
If you want to get the best quality for vulnerability data then you always have to consider VulDB.
Product
Vendor
Name
Version
CPE 2.3
CPE 2.2
CVSSv4
VulDB Vector: 🔒VulDB Reliability: 🔍
CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒
CVSSv3
VulDB Meta Base Score: 3.7VulDB Meta Temp Score: 3.5
VulDB Base Score: 3.7
VulDB Temp Score: 3.4
VulDB Vector: 🔒
VulDB Reliability: 🔍
CNA Base Score: 3.7
CNA Vector: 🔒
CVSSv2
| AV | AC | Au | C | I | A |
|---|---|---|---|---|---|
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
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| Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
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| Unlock | Unlock | Unlock | Unlock | Unlock | Unlock |
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍
Exploiting
Class: Reliance on obfuscation or encryption of security-relevant inputs without integrity checkingCWE: CWE-649 / CWE-325
CAPEC: 🔒
ATT&CK: 🔒
Physical: No
Local: No
Remote: Yes
Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒
EPSS Score: 🔒
EPSS Percentile: 🔒
Price Prediction: 🔍
Current Price Estimation: 🔒
| 0-Day | Unlock | Unlock | Unlock | Unlock |
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| Today | Unlock | Unlock | Unlock | Unlock |
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: no mitigation knownStatus: 🔍
0-Day Time: 🔒
Timeline
05/29/2025 Advisory disclosed05/29/2025 VulDB entry created
05/30/2025 VulDB entry last update
Sources
Advisory: gist.github.comStatus: Not defined
CVE: CVE-2025-5323 (🔒)
GCVE (CVE): GCVE-0-2025-5323
GCVE (VulDB): GCVE-100-310493
scip Labs: https://www.scip.ch/en/?labs.20161013
Entry
Created: 05/29/2025 10:25Updated: 05/30/2025 09:02
Changes: 05/29/2025 10:25 (57), 05/30/2025 09:02 (30)
Complete: 🔍
Submitter: Gavin Zhong
Cache ID: 216::103
Submit
Accepted
- Submit #580256: open-event-server v1.19.1 Reliance on Obfuscation or Encryption of Security-Relevant Input (by Gavin Zhong)
If you want to get the best quality for vulnerability data then you always have to consider VulDB.
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