RupeeWeb: Authentication Bypass by Assumed-Immutable Data
CVE-2025-26522 is a high-severity authentication bypass by assumed-immutable data vulnerability in RupeeWeb from Rupeeseed Technology Ventures, with a CVSS 4.0 base score of 7.5 out of 10. It can be exploited remotely over the network by an attacker with administrator privileges, without any action from a user. Affected RupeeWeb versions: <66.9. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 0.43% chance of exploitation within 30 days, which is low compared with other CVEs.
High severity with no evidence of exploitation so far.
What to do
- Check which version of RupeeWeb you run against the affected versions below, and install the vendor's latest release.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Rupeeseed Technology Ventures | RupeeWeb | <66.9 | Not stated |
Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- NetworkCan be exploited remotely over a network, including the internet.
- Attack complexity
- HighSuccess depends on conditions outside the attacker's control.
- Attack requirements
- NoneThe attack does not depend on a particular deployment or configuration.
- Privileges required
- HighAdministrator-level access is required first.
- User interaction
- NoneNo action by a victim is required.
- Confidentiality (vulnerable system)
- HighSerious loss of confidentiality on the vulnerable system.
- Integrity (vulnerable system)
- HighSerious loss of integrity on the vulnerable system.
- Availability (vulnerable system)
- HighSerious loss of availability on the vulnerable system.
- Confidentiality (other systems)
- NoneNo loss of confidentiality on systems beyond the vulnerable one.
- Integrity (other systems)
- NoneNo loss of integrity on systems beyond the vulnerable one.
- Availability (other systems)
- NoneNo loss of availability on systems beyond the vulnerable one.
Vector: CVSS:4.0/AV:N/AC:H/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X. Scored by CNA (cert-in.org.in).
Official description
This vulnerability exists in RupeeWeb trading platform due to improper implementation of OTP validation mechanism in certain API endpoints. A remote attacker with valid credentials could exploit this vulnerability by manipulating API responses. Successful exploitation of this vulnerability could allow the attacker to bypass Two-Factor Authentication (2FA) for other user accounts.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Authentication Bypass by Assumed-Immutable Data
The authentication scheme or implementation uses key data elements that are assumed to be immutable, but can be controlled or modified by the attacker.
How developers prevent this class of flaw
- Implement proper protection for immutable data (e.g. environment variable, hidden form fields, etc.)
More Authentication Bypass by Assumed-Immutable Data vulnerabilities (CWE-302)
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: total).
- Record last changed materially (score, affected products, status or references).
References
Other vulnerabilities in RupeeWeb
- 7.4 High severity
Recent Authentication Bypass by Assumed-Immutable Data vulnerabilities
- 8.1 High severity
- 9.9 Critical severity
- 8.8 High severity
- 9.8 Critical severity
- 7.5 High severity
- 7.5 High severity
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