A2A-ForensicTrace: Offline Verification of Tamper-Evident A2A Runtime Evidence

Security-relevant Agent2Agent A2A executions can cross organizational boundaries, leaving investigators without live access to all participating systems. Offline investigation involves checking preserved records and their cross-record relationships for consistency. This paper presents...

CVE-2026-89186

Use of Cache Containing Sensitive Information in ZenHive mpp allows a shared HTTP cache to store a paid response and serve it to clients that never paid. MPP.Plug.verifycredential in lib/mpp/plug.ex sets payment-receipt and cache-control: private on the connection before the wrapped application...

CVE-2026-88255

Improper Validation of Unsafe Equivalence in Input in ZenHive mpp allows an unauthenticated remote client to pass the Tempo duplicate-submission gate twice with one signed transaction. MPP.Methods.Tempo reserves the pre-broadcast dedup slot on the caller-supplied hex in reservehashatomic/2, keyed...

CVE-2026-88255

CVE-2026-88255 is an improper validation of unsafe equivalence in input in ZenHive mpp (versions 0.2.0 through before 0.16.2). The root cause lies in MPP.Methods.Tempo, where the pre-broadcast dedup reserve (reserve_hash_atomic/2) keys on the caller-supplied raw hex (tx.raw) rather than a canonic...

EUVD-2026-80256

Improper Validation of Unsafe Equivalence in Input in ZenHive mpp allows an unauthenticated remote client to pass the Tempo duplicate-submission gate twice with one signed transaction. MPP.Methods.Tempo reserves the pre-broadcast dedup slot on the caller-supplied hex in reservehashatomic/2, keyed...

CVE-2026-88255 mpp Tempo keys its pre-broadcast dedup reserve on the caller-supplied transaction encoding, so a re-encoded signed transaction reserves a second slot

Improper Validation of Unsafe Equivalence in Input in ZenHive mpp allows an unauthenticated remote client to pass the Tempo duplicate-submission gate twice with one signed transaction. MPP.Methods.Tempo reserves the pre-broadcast dedup slot on the caller-supplied hex in reservehashatomic/2, keyed...

CVE-2026-88255 mpp Tempo keys its pre-broadcast dedup reserve on the caller-supplied transaction encoding, so a re-encoded signed transaction reserves a second slot

Improper Validation of Unsafe Equivalence in Input in ZenHive mpp allows an unauthenticated remote client to pass the Tempo duplicate-submission gate twice with one signed transaction. MPP.Methods.Tempo reserves the pre-broadcast dedup slot on the caller-supplied hex in reservehashatomic/2, keyed...

EEF-CVE-2026-88255 mpp Tempo keys its pre-broadcast dedup reserve on the caller-supplied transaction encoding, so a re-encoded signed transaction reserves a second slot

Summary Improper Validation of Unsafe Equivalence in Input in ZenHive mpp allows an unauthenticated remote client to pass the Tempo duplicate-submission gate twice with one signed transaction. MPP.Methods.Tempo reserves the pre-broadcast dedup slot on the caller-supplied hex in reservehashatomic/...

CVE-2026-88255 mpp Tempo keys its pre-broadcast dedup reserve on the caller-supplied transaction encoding, so a re-encoded signed transaction reserves a second slot

Improper Validation of Unsafe Equivalence in Input in ZenHive mpp allows an unauthenticated remote client to pass the Tempo duplicate-submission gate twice with one signed transaction. MPP.Methods.Tempo reserves the pre-broadcast dedup slot on the caller-supplied hex in reservehashatomic/2, keyed...

CVE-2026-89186 mpp writes Payment-Receipt and Cache-Control before the wrapped application runs, letting a consumer's own Cache-Control expose paid responses to shared caches

Use of Cache Containing Sensitive Information in ZenHive mpp allows a shared HTTP cache to store a paid response and serve it to clients that never paid. MPP.Plug.verifycredential in lib/mpp/plug.ex sets payment-receipt and cache-control: private on the connection before the wrapped application...

EUVD-2026-80254

Use of Cache Containing Sensitive Information in ZenHive mpp allows a shared HTTP cache to store a paid response and serve it to clients that never paid. MPP.Plug.verifycredential in lib/mpp/plug.ex sets payment-receipt and cache-control: private on the connection before the wrapped application...

EEF-CVE-2026-89186 mpp writes Payment-Receipt and Cache-Control before the wrapped application runs, letting a consumer's own Cache-Control expose paid responses to shared caches

Summary Use of Cache Containing Sensitive Information in ZenHive mpp allows a shared HTTP cache to store a paid response and serve it to clients that never paid. MPP.Plug.verifycredential in lib/mpp/plug.ex sets payment-receipt and cache-control: private on the connection before the wrapped...

CVE-2026-89186 mpp writes Payment-Receipt and Cache-Control before the wrapped application runs, letting a consumer's own Cache-Control expose paid responses to shared caches

Use of Cache Containing Sensitive Information in ZenHive mpp allows a shared HTTP cache to store a paid response and serve it to clients that never paid. MPP.Plug.verifycredential in lib/mpp/plug.ex sets payment-receipt and cache-control: private on the connection before the wrapped application...

WordPress PeproDev WooCommerce Receipt Uploader plugin <= 2.8.0 - Unauthenticated Image Attachment Disclosure via IDOR vulnerability

Unauthenticated Image Attachment Disclosure via IDOR vulnerability discovered by Shivamani Vastrala in WordPress Plugin PeproDev WooCommerce Receipt Uploader versions = 2.8.0...

WordPress PeproDev WooCommerce Receipt Uploader plugin <= 2.8.0 - Unauthenticated Order Receipt Tampering via IDOR vulnerability

Unauthenticated Order Receipt Tampering via IDOR vulnerability discovered by Lyris Vale in WordPress Plugin PeproDev WooCommerce Receipt Uploader versions = 2.8.0...

PT-2026-73111

Name of the Vulnerable Software and Affected Versions WCPOS – Point of Sale POS plugin for WooCommerce versions prior to 1.9.15 Description Authenticated attackers with Shop Manager-level access or higher can perform code injection through the 'thermal' Template Engine. The issue occurs because t...

CVE-2026-14314

The PeproDev WooCommerce Receipt Uploader WordPress plugin through 2.8.0 does not verify that a requested attachment belongs to the order referenced by its access token, allowing unauthenticated attackers to forge a token and disclose image attachments, including other customers' uploaded payment...

CVE-2026-14313

PeproDev WooCommerce Receipt Uploader PeproDev WooCommerce Receipt Uploader WordPress plugin through 2.8.0 slug: pepro-bacs-receipt-upload-for-woocommerce, all versions up to and including 2.8.0 latest on wordpress.org; no fixed version available at the time of writing, is vulnerable to...

EUVD-2026-53718

PeproDev WooCommerce Receipt Uploader PeproDev WooCommerce Receipt Uploader WordPress plugin through 2.8.0 slug: pepro-bacs-receipt-upload-for-woocommerce, all versions up to and including 2.8.0 latest on wordpress.org; no fixed version available at the time of writing, is vulnerable to...

CVE-2026-14314 PeproDev WooCommerce Receipt Uploader <= 2.8.0 - Unauthenticated Image Attachment Disclosure via IDOR

The PeproDev WooCommerce Receipt Uploader WordPress plugin through 2.8.0 does not verify that a requested attachment belongs to the order referenced by its access token, allowing unauthenticated attackers to forge a token and disclose image attachments, including other customers' uploaded payment...