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Cybersecurity topic

Data Breaches

Material intrusions and disclosures where sensitive information, operational systems, customers, or third parties face confirmed exposure.

Active Exploitation Attempts Target WSO2 API Manager JWT Bypass With Forged Admin Tokens

WatchTowr confirmed active in-the-wild exploitation of CVE-2026-5430 in WSO2 API Manager (CVSS 9.8), capturing forged admin-privilege JWT tokens on its honeypot network on September 13, 2026; vendor fixes ship as pull requests and update levels spanning API Manager 4.1.0 through 4.6.0, API Control Plane, Traffic Manager, and Universal Gateway. Acronis separately reported limited, targeted exploitation of CVE-2026-87886 in its cPanel/WHM backup plugin based on a single customer report, while CISA added CVE-2026-76461, a Cisco Secure Email Gateway SQL injection, to its Known Exploited Vulnerabilities catalog.

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Week in review: Linux rootkit deployed on F5 BIG-IP APM devices, Cisco FMC bugs exploited

Cisco confirmed that state-sponsored and ransomware actors are actively exploiting CVE-2026-20079, an authentication bypass in Secure Firewall Management Center, and N-able shipped an emergency hotfix for CVE-2026-86218, a pre-auth RCE in N-central already exploited in the wild. Sophos separately reported a Linux rootkit on compromised F5 BIG-IP APM appliances that keeps its web shell in memory to evade disk-based detection, while the Dutch NCSC issued an imminent-exploitation warning for two Check Point VPN flaws (CVE-2026-85102, CVE-2026-85103) for which no public proof-of-concept exists yet.

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GitLab CVSS 10 File-Read Flaw Draws In-the-Wild Probes After Disclosure

CISA added CVE-2026-85706 to its KEV catalog on September 11 after watchTowr observed in-the-wild probes against GitLab's unauthenticated repository-commits API path traversal (CVSS 10.0); self-managed instances should patch to 19.1.8, 19.2.6, or 19.3.2 and review HTTP POST requests to /api/v4/projects/{id}/repository/commits/ URIs containing file.Path parameters. Separately, Wiz confirmed that multiple actors chained CVE-2026-42018 and CVE-2026-42016 against self-hosted JFrog Artifactory between August 15 and September 8 to mint admin tokens, install malicious Groovy plugins, and deploy a Rust-based backdoor, with 49–62% of reachable instances vulnerable to at least one of the three flaws.

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Cisco confirms CVE-2026-20079 Secure FMC flaw exploited in attacks

Cisco confirmed on Wednesday that CVE-2026-20079, a CVSS 10.0 authentication bypass in Secure FMC that lets an unauthenticated remote attacker execute root-level commands via crafted HTTP requests, is under active exploitation, with no workarounds available and CISA ordering federal civilian agencies to patch by September 12. Proofpoint separately documented four espionage clusters deploying the BlueMoon kit—chaining two V8 Chrome flaws with a Windows ALPC heap overflow—within a single week, and CISA has set KEV patch deadlines of September 18 through 23 for the three CVEs while publishing process-tree, file, and scheduled-task IOCs for organizations to hunt after applying browser and OS updates.

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Adobe Patches Magento Zero-Day Exploited to Deploy Rust Backdoor and PHP Web Shell

Adobe shipped the VULN-39341 hotfix for CVE-2026-75650 (StyleSmuggler), a template-injection flaw in Magento's payment-reminder pipeline that Sansec confirmed under active exploitation since September 4, with threat actors deploying a Rust-based Linux backdoor and a PHP web shell; Adobe requires both the patch and encryption-key rotation across affected Adobe Commerce and Magento Open Source versions through 2.4.9-2026-aug. In the same window, CERT Polska confirmed active exploitation of the MikroTrick chain (CVE-2026-67276 and CVE-2026-86060) against SSH-enabled MikroTik RouterOS devices, fixed in 6.49.21, 7.23.4, and 7.24.2, while Google patched a V8 type-confusion zero-day (CVE-2026-85046) under active exploitation in Chrome 152.0.7977.82.

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Week in review: Claude accounts compromised through infostealer, Patch Tuesday forecast

Attackers have been exploiting an unpatched, unauthenticated code-execution vulnerability in all current versions of Magento Open Source and Adobe Commerce since September 4, planting a persistent Rust backdoor under a fake kernel-thread name; with no vendor fix before Adobe's September 8 release, Sansec and Disrex recommend disabling GraphQL, adding proc_open to disable_functions, mounting /tmp and /dev/shm with noexec, and—on already-compromised hosts—removing the cron entry before killing the process, then rotating the crypt key, all admin passwords, and every payment-provider API key in app/etc/env.php. In the same period, SonicWall confirmed active exploitation of two zero-days in SMA 1000 appliances, a threat actor is actively targeting internet-exposed Sangoma Switchvox instances through a recently patched SQL injection, and JetBrains disclosed that attackers breached its Cadence cloud service via an unpatched TeamCity deserialization flaw, extracting AWS IAM credentials from a 2024 backup and prompting all users to revoke every credential and treat all prior executions as untrusted.

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SonicWall warns of actively exploited SMA1000 zero-day flaws

SonicWall confirmed active exploitation of a zero-day chain—CVE-2026-83548, an SSRF-to-command-injection flaw in the WorkPlace interface, and CVE-2026-83549, a command injection in the Management Console—against SMA1000 6210, 7210, and 8200v appliances; the vendor shipped a hotfix and advises re-imaging, credential rotation, and TOTP reset where IOCs are detected, though it has not yet published those IOCs. In parallel, Horizon3.ai and SRA Labs observed in-the-wild exploitation of CVE-2026-9586, an unauthenticated SQL injection in Sangoma Switchvox 8.3 yielding PostgreSQL superuser code execution; the patch shipped July 14, six weeks before the first observed attacks on August 30, and roughly 4,000 instances remain internet-exposed.

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Attackers Steal METR API Key and Consume AI Credits Worth About $600,000

PaperCut shipped emergency patches for CVE-2026-81578 and CVE-2026-82078 after Defused confirmed active exploitation in which an actor chains the authentication bypass to dump Derby database tables, while Shadowserver tracks over 800 exposed NG and MF servers. VulnCheck logged 360 detections of CVE-2026-0768 and CVE-2026-66066 exploitation against Langflow and Rails hosts, with attackers harvesting API keys and cloud credentials from environment variables, and noted that a patched 8.1.3.1 server still executes the RCE gadget through variation-key Marshal deserialization.

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What vulnerability prioritization looks like when KEV, EPSS, and CVSS disagree

Sygnia confirmed that the Fire Ant actor deployed purpose-built implants on Cisco IOS XR routers and TACACS servers that filter log output, hide GRE tunnel configuration from administrators, and exfiltrate credentials through a tac_plus library-injection technique it tracks as TacTap, with IoCs and YARA rules published for defensive validation. CISA added CVE-2026-60004 (Gitea code injection) and CVE-2026-8452 (Citrix NetScaler) to its KEV catalog, confirming active exploitation of both, while Shadowserver reported at least 274 internet-facing Zimbra instances already compromised via CVE-2026-73570.

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PaperCut Zero-Day Exploited in Attacks, Affecting All NG and MF Versions

PaperCut has confirmed active zero-day exploitation across all NG and MF versions, released emergency patches for v25 and v26, and directed internet-exposed servers to immediately restrict access to trusted IP addresses while its investigation continues. Separately, McKesson disclosed a breach it detected on August 25, while ShinyHunters alleges it used vishing to compromise Okta accounts and exfiltrate roughly 1 TB of patient data over four days—claims McKesson has not independently confirmed as its investigation remains in early stages.

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Unknown PaperCut NG/MF vulnerability is under active attack

PaperCut confirmed active exploitation of an unspecified NG/MF vulnerability and issued specific remediation—restrict Application Server web access to trusted IPs and hunt for truncated server.log files or suspicious pc-app.exe post-exploitation activity—while CISA added Citrix NetScaler CVE-2026-8452 to its KEV Catalog after watchTowr demonstrated root-level RCE beyond Citrix's initial DoS-only assessment, setting an August 29 federal patch deadline. Separately, the FBI and DOJ seized domains that rendered QTFY's QScan and QTRouter tools inoperable, dismantling the obfuscation network behind intrusions targeting NASA, the Federal Reserve, and the U.S. Senate.

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Critical Gitea RCE Actively Exploited as Reported Attack Drops Miner-Like Payload

CISA listed CVE-2026-60004 in its KEV catalog after confirming in-the-wild exploitation of Gitea's diffpatch endpoint, where an attacker with repository write access—trivially obtained via default open registration—plants a malicious Git hook to execute arbitrary shell commands as the Gitea OS user; the vulnerability spans all versions from 1.17 and is fixed in 1.27.1, and one documented hit showed a dropper that cleared LD_PRELOAD, killed competing high-CPU processes, and pulled an architecture-specific miner payload over HTTPS. SOCRadar separately detailed AnonyMousKIT, a credit-metered PhaaS platform active since early 2024 that deploys AI voice agents to call owners of stolen Apple devices and harvest their passcode, Apple ID, and live 2FA code to bypass Activation Lock; 200 recovered calls ran from August 2025 to May 2026 (179 to Brazilian numbers), and the researchers recommend moving high-value Apple IDs to hardware security keys to neutralize the real-time 2FA interception the platform targets.

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