CVE-2026-24467

CVE-2026-24467 is a critical-severity vulnerability in Filigran Openaev with a CVSS 3.x base score of 9.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-640.

Key facts

Description

OpenAEV is an open source platform allowing organizations to plan, schedule and conduct cyber adversary simulation campaign and tests. Starting in version 1.0.0 and prior to version 2.0.13, OpenAEV's password reset implementation contains multiple security weaknesses that together allow reliable account takeover. The primary issue is that password reset tokens do not expire. Once a token is generated, it remains valid indefinitely, even if significant time has passed or if newer tokens are issued for the same account. This allows an attacker to accumulate valid password reset tokens over time and reuse them at any point in the future to reset a victim’s password. A secondary weakness is that password reset tokens are only 8 digits long. While an 8-digit numeric token provides 100,000,000 possible combinations (which is secure enough), the ability to generate large numbers of valid tokens drastically reduces the required number of attempts to guess a valid password reset token. For example, if an attacker generates 2,000 valid tokens, the brute-force effort is reduced to approximately 50,000 attempts, which is a trivially achievable number of requests for an automated attack. (100 requests per second can mathematically find a valid password reset token in 500 seconds.) By combining these flaws, an attacker can mass-generate valid password reset tokens and then brute-force them efficiently until a match is found, allowing the attacker to reset the victim’s password to a value of their choosing. The original password is not required, and the attack can be performed entirely without authentication. This vulnerability enables full account takeover that leads to platform compromise. An unauthenticated remote attacker can reset the password of any registered user account and gain complete access without authentication. Because user email addresses are exposed to other users by design, a single guessed or observed email address is sufficient to compromise even administrator accounts with non-guessable email addresses. This design flaw results in a reliable and scalable account takeover vulnerability that affects any registered user account in the system. Note: The vulnerability does not require OpenAEV to have the email service configured. The exploit does not depend on the target email address to be a real email address. It just needs to be registered to OpenAEV. Successful exploitation allows an unauthenticated remote attacker to access sensitive data (such as the Findings section of a simulation), modify payloads executed by deployed agents to compromise all hosts where agents are installed (therefore the Scope is changed). Users should upgrade to version 2.0.13 to receive a fix.

Frequently asked questions

What is CVE-2026-24467?
OpenAEV is an open source platform allowing organizations to plan, schedule and conduct cyber adversary simulation campaign and tests. Starting in version 1.0.0 and prior to version 2.0.13, OpenAEV's password reset implementation contains multiple security weaknesses that together allow reliable account takeover. The primary issue is that password reset tokens do not expire. Once a token is generated, it remains valid indefinitely, even if significant time has passed or if newer tokens are issued for the same account. This allows an attacker to accumulate valid password reset tokens over time and reuse them at any point in the future to reset a victim’s password. A secondary weakness is that password reset tokens are only 8 digits long. While an 8-digit numeric token provides 100,000,000 possible combinations (which is secure enough), the ability to generate large numbers of valid tokens drastically reduces the required number of attempts to guess a valid password reset token. For example, if an attacker generates 2,000 valid tokens, the brute-force effort is reduced to approximately 50,000 attempts, which is a trivially achievable number of requests for an automated attack. (100 requests per second can mathematically find a valid password reset token in 500 seconds.) By combining these flaws, an attacker can mass-generate valid password reset tokens and then brute-force them efficiently until a match is found, allowing the attacker to reset the victim’s password to a value of their choosing. The original password is not required, and the attack can be performed entirely without authentication. This vulnerability enables full account takeover that leads to platform compromise. An unauthenticated remote attacker can reset the password of any registered user account and gain complete access without authentication. Because user email addresses are exposed to other users by design, a single guessed or observed email address is sufficient to compromise even administrator accounts with non-guessable email addresses. This design flaw results in a reliable and scalable account takeover vulnerability that affects any registered user account in the system. Note: The vulnerability does not require OpenAEV to have the email service configured. The exploit does not depend on the target email address to be a real email address. It just needs to be registered to OpenAEV. Successful exploitation allows an unauthenticated remote attacker to access sensitive data (such as the Findings section of a simulation), modify payloads executed by deployed agents to compromise all hosts where agents are installed (therefore the Scope is changed). Users should upgrade to version 2.0.13 to receive a fix.
How severe is CVE-2026-24467?
CVE-2026-24467 has a CVSS 3.x base score of 9.0, rated critical severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-24467 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-24467?
CVE-2026-24467 affects Filigran Openaev. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-24467?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2026-24467 have an EU (EUVD) identifier?
Yes. CVE-2026-24467 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-23882.
When was CVE-2026-24467 published?
CVE-2026-24467 was published on 2026-04-20 and last updated on 2026-06-17.

References

Affected products (1)

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