[NEW] [high] Apache Traffic Server: Multiple vulnerabilities
A remote, anonymous attacker can exploit multiple vulnerabilities in Apache Traffic Server to bypass security measures, disclose or manipulate data, trigger a Denial-of-Service, and potentially achieve code execution.
CSIRTS triage
- What
- A remote, anonymous attacker can exploit multiple vulnerabilities to bypass security measures and potentially execute code.
- Who is affected
- Deployments of Apache Traffic Server are affected.
- Urgency
- Remediation is urgent due to high severity and potential for exploitation.
- Action
- Apply patches for Apache Traffic Server to address the vulnerabilities.
AI-assisted analysis generated from the source advisory — verify against the original.
⚡ Watch Traffic Server
Get an email when a new Traffic Server advisory drops — max one per day, one-click unsubscribe.
Details
Original advisory: https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-2561
Exploitation outlook
EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.
- Low exploitation riskCVE-2026-220680.21% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 11% of all scored CVEs.
- Low exploitation riskCVE-2026-240330.17% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 6% of all scored CVEs.
- Low exploitation riskCVE-2026-332670.24% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 16% of all scored CVEs.
- Low exploitation riskCVE-2026-339300.23% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 14% of all scored CVEs.
- Low exploitation riskCVE-2026-419200.19% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 9% of all scored CVEs.
- Low exploitation riskCVE-2026-578340.26% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 18% of all scored CVEs.
- Low exploitation riskCVE-2026-581500.24% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 16% of all scored CVEs.
- Low exploitation riskCVE-2026-581510.32% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 25% of all scored CVEs.
- Low exploitation riskCVE-2026-581520.23% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 14% of all scored CVEs.
- Low exploitation riskCVE-2026-581530.23% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 14% of all scored CVEs.
Referenced CVEs
Same CVEs, other sources
How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.
- mediumCVE-2026-65100: Apache Traffic Server updates the HTTP/2 HPACK dynamic table before confirming the header bloc…nvd
- highCVE-2026-58189: Apache Traffic Server allows redirect-limit bypass when plugins reset the retry counter, enabl…nvd
- highCVE-2026-58188: Several Apache Traffic Server experimental plugins have memory-safety and limit-bypass errors.…nvd
- lowCVE-2026-58187: The Apache Traffic Server multiplexer plugin overruns its chunk-decode buffer on upstream inpu…nvd
- highCVE-2026-58186: The Apache Traffic Server webp_transform plugin can decode unsafely and serve mislabeled, cach…nvd
- mediumCVE-2026-58185: The Apache Traffic Server intercept plugin has a use-after-free. This issue affects Apache Tra…nvd
- highCVE-2026-58184: The Apache Traffic Server header_rewrite plugin can crash or corrupt memory during cookie oper…nvd
- mediumCVE-2026-58183: The Apache Traffic Server prefetch plugin can crash when processing attacker-influenced input.…nvd
- highCVE-2026-58182: The Apache Traffic Server ts_lua plugin mishandles initialization, transform context, and per-…nvd
- highCVE-2026-58181: The Apache Traffic Server uri_signing and url_sig plugins can exhaust the stack or crash on at…nvd
- highCVE-2026-58180: The Apache Traffic Server txn_box plugin overflows the stack from attacker-controlled input. T…nvd
- highCVE-2026-58179: The Apache Traffic Server regex_remap plugin overflows the stack and integers from substitutio…nvd
More from CERT-Bund (BSI) Security Advisories
- medium[UPDATE] [medium] Linux Kernel: Multiple vulnerabilities allow denial of service2026-07-31
- medium[UPDATE] [medium] Linux Kernel: Multiple vulnerabilities allow Denial of Service2026-07-31
- medium[UPDATE] [medium] Linux Kernel: Multiple vulnerabilities2026-07-31
- medium[UPDATE] [medium] Linux Kernel: Multiple vulnerabilities allow denial of service2026-07-31
- medium[UPDATE] [medium] Linux Kernel (ntfs3): Vulnerability allows information disclosure2026-07-31