CVE-2026-40093 | nimiq core-rs-albatross up to 1.3.0 Block blockchain/src/reward.rs Policy::supply_at improper validation of specified quantity in input (GHSA-49xc-52mp-cc9j)

VDB-356772 · CVE-2026-40093 · GHSA-49XC-52MP-CC9J NIMIQ CORE-RS-ALBATROSS UP TO 1.3.0 BLOCK BLOCKCHAIN/SRC/REWARD.RS POLICY::SUPPLY_AT IMPROPER VALIDATION OF SPECIFIED QUANTITY IN INPUT HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 6.7 $0-$5k 1.21+ Summaryinfo A vulnerability labeled as problematic has been found in nimiq core-rs-albatross up to 1.3.0. This impacts the function Policy::supply_at of the file blockchain/src/reward.rs of the component Block Handler. The manipulation results in improper validation of specified quantity in input. This vulnerability is reported as CVE-2026-40093. The attack can be launched remotely. No exploit exists. Detailsinfo A vulnerability, which was classified as problematic, was found in nimiq core-rs-albatross up to 1.3.0. Affected is the function Policy::supply_at of the file blockchain/src/reward.rs of the component Block Handler. The manipulation with an unknown input leads to a improper validation of specified quantity in input vulnerability. CWE is classifying the issue as CWE-1284. The product receives input that is expected to specify a quantity (such as size or length), but it does not validate or incorrectly validates that the quantity has the required properties. This is going to have an impact on integrity, and availability. CVE summarizes: nimiq-blockchain provides persistent block storage for Nimiq's Rust implementation. In 1.3.0 and earlier, block timestamp validation enforces that timestamp >= parent.timestamp for non-skip blocks and timestamp == parent.timestamp + MIN_PRODUCER_TIMEOUT for skip blocks, but there is no visible upper bound check against the wall clock. A malicious block-producing validator can set block timestamps arbitrarily far in the future. This directly affects reward calculations via Policy::supply_at() and batch_delay() in blockchain/src/reward.rs, inflating the monetary supply beyond the intended emission schedule. The advisory is shared for download at github.com. This vulnerability is traded as CVE-2026-40093 since 04/09/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 04/10/2026). There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product. Productinfo Vendor nimiq Name core-rs-albatross Version 1.0 1.1 1.2 1.3.0 Website Product: https://github.com/nimiq/core-rs-albatross/ CPE 2.3info 🔒 🔒 🔒 CPE 2.2info 🔒 🔒 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv3info VulDB Meta Base Score: 6.7 VulDB Meta Temp Score: 6.7 VulDB Base Score: 5.4 VulDB Temp Score: 5.4 VulDB Vector: 🔒 VulDB Reliability: 🔍 CNA Base Score: 8.1 CNA Vector (GitHub_M): 🔒 CVSSv2info Vector Complexity Authentication Confidentiality Integrity Availability Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock VulDB Base Score: 🔒 VulDB Temp Score: 🔒 VulDB Reliability: 🔍 Exploitinginfo Class: Improper validation of specified quantity in input CWE: CWE-1284 / CWE-703 CAPEC: 🔒 ATT&CK: 🔒 Physical: No Local: No Remote: Yes Availability: 🔒 Status: Not defined Price Prediction: 🔍 Current Price Estimation: 🔒 0-Day Unlock Unlock Unlock Unlock Today Unlock Unlock Unlock Unlock Threat Intelligenceinfo Interest: 🔍 Active Actors: 🔍 Active APT Groups: 🔍 Countermeasuresinfo Recommended: no mitigation known Status: 🔍 0-Day Time: 🔒 Timelineinfo 04/09/2026 CVE reserved 04/10/2026 +1 days Advisory disclosed 04/10/2026 +0 days VulDB entry created 04/10/2026 +0 days VulDB entry last update Sourcesinfo Product: github.com Advisory: GHSA-49xc-52mp-cc9j Status: Confirmed CVE: CVE-2026-40093 (🔒) GCVE (CVE): GCVE-0-2026-40093 GCVE (VulDB): GCVE-100-356772 Entryinfo Created: 04/10/2026 06:53 Changes: 04/10/2026 06:53 (64) Complete: 🔍 Cache ID: 99:1D4:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸