SB2026041319 - Multiple vulnerabilities in IBM Storage Sentinel Anomaly Scan Engine
Published: April 13, 2026
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 7 secuirty vulnerabilities.
1) Allocation of Resources Without Limits or Throttling (CVE-ID: CVE-2025-66418)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to missing limits on the number of links in the decompression chain when handling gzip or zstd data in the server response. A malicious server can send a response with a large amount of links and cause high CPU load, leading to a denial of service condition.
2) Resource exhaustion (CVE-ID: CVE-2025-66471)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to the streaming API does not properly control consumption of internal resources. A remote attacker can trigger resource exhaustion and perform a denial of service (DoS) attack.
3) Improper handling of highly compressed data (CVE-ID: CVE-2026-21441)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to the application does not properly handle highly compressed data when sending HTTP redirect responses. A remote attacker can multiple large requests to the application, consume all available CPU and memory resources and perform a denial of service attack.
4) Cross-site scripting (CVE-ID: CVE-2026-22029)
The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.
The vulnerability exists due to insufficient sanitization of user-supplied data. A remote attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in user's browser in context of vulnerable website.
Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.
5) Resource exhaustion (CVE-ID: CVE-2025-15284)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to the arrayLimit option does not enforce limits for bracket notation (a[]=1&a[]=2). A remote attacker can trigger resource exhaustion and perform a denial of service (DoS) attack.
6) Insufficient verification of data authenticity (CVE-ID: CVE-2026-26007)
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to the public_key_from_numbers (or EllipticCurvePublicNumbers.public_key()), EllipticCurvePublicNumbers.public_key(), load_der_public_key() and load_pem_public_key() functions do not verify that the point belongs to the expected prime-order subgroup of the curve. A remote attacker can provide a public key point P from a small-order subgroup. This can lead to security issues in various situations, such as the most commonly used signature verification (ECDSA) and shared key negotiation (ECDH). When the victim computes the shared secret as S = [victim_private_key]P via ECDH, this leaks information about victim_private_key mod (small_subgroup_order). For curves with cofactor > 1, this reveals the least significant bits of the private key. When these weak public keys are used in ECDSA , it's easy to forge signatures on the small subgroup.
7) Improper Check for Unusual or Exceptional Conditions (CVE-ID: CVE-2026-25639)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to improper error handling within proto Key in mergeConfig. A remote attacker can send specially crafted data to the application and perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.