Skip to main content
cvebuzz

CVE mentions, exploit signals, and PoC evidence in one fast public view.

CVE detail

CVE-2019-17638

In Eclipse Jetty, versions 9.4.27.v20200227 to 9.4.29.v20200521, in case of too large response headers, Jetty throws an exception to produce an HTTP 431 error. When this happens, the ByteBuffer containing the HTTP response headers is released back to the ByteBufferPool twice. Because of this double release, two threads can acquire the same ByteBuffer from the pool and while thread1 is about to use the ByteBuffer to write response1 data, thread2 fills the ByteBuffer with other data. Thread1 then proceeds to write the buffer that now contains different data. This results in client1, which issued request1 seeing data from another request or response which could contain sensitive data belonging to client2 (HTTP session ids, authentication credentials, etc.). If the Jetty version cannot be upgraded, the vulnerability can be significantly reduced by configuring a responseHeaderSize significantly larger than the requestHeaderSize (12KB responseHeaderSize and 8KB requestHeaderSize).

CVSS 9.4 · CriticalBuzz score 21.0

Buzz score

Why this CVE is surfacing

Buzz score total 21.0

This all-time snapshot uses the same composite formula as Trending across a 30-year evidence window, rather than a current rolling window.

Buzz score components · mention 11.0 · diversity 10.0 · KEV 0.0 · OTX 0.0 · PoC 0.0
Mention score
11.0
2 evidence mentions in the snapshot
Diversity score
10.0
2 sources across 2 categories
KEV score
0.0
No KEV entry observed
OTX score
0.0
0 OTX pulses
PoC score
0.0
0 repos · best confidence N/A
Best PoC traction
0
Maximum stars on a matched PoC repo

Why it matters now

Mention timeline

Total mentions
0
within the 30d window
Peak daily
0
highest bucket

Evidence

Source links by recency

Newest mentions first
2 source links · newest first
  • 24th August – Threat Intelligence BulletinCheck Point Research

    For the latest discoveries in cyber research for the week of 24th August 2020, please download our Threat Intelligence Bulletin. Top Attacks and Breaches The University of Utah has paid $457K to prevent attackers from publishing student and employee information stolen during a ransomware attack which ended on July 19th. The ransom has been paid […]

    vendorresearch.checkpoint.comAug 24, 2020, 3:08 PM
  • Critical flaw in Jenkins Server can cause information disclosureSecurity Affairs

    A critical vulnerability in Jenkins server software could result in memory corruption and cause confidential information disclosure. A critical vulnerability in Jenkins server software, tracked as CVE-2019-17638, could result in memory corruption and cause confidential information disclosure. Jenkins is the most popular open source automation server, it is maintained by CloudBees and the Jenkins community. The […]

    newssecurityaffairs.comAug 18, 2020, 5:55 PM

Exploit code

Public exploit repository references

Public PoC repositories are third-party, potentially unsafe artifacts. Treat their code as untrusted and use it only on authorized systems in an isolated, least-privilege environment. cvebuzz does not execute the code or verify that an exploit works.

0 repository references · best confidence N/A · max 0 stars
No public PoC repositories have been matched yet.

Related records

Similar CVEs

6 related CVEs with shared weakness or product evidence
  • CVE-2026-42955

    In NLnet Labs Unbound 1.16.2 up to and including 1.25.1, a similar vulnerability as with CVE-2026-40622 in the 'ghost domain names' family of attacks was found in Unbound that cou…

    CVSS 3.7 · Low
    2 mentions
  • CVE-2026-47087

    An issue was discovered in cyrus-imapd in Cyrus IMAP through 3.12.2. URLAUTH does not honor revoked authorizer access. A URLAUTH URL minted while the authorizer had access continu…

    CVSS 3.5 · Low
    2 mentions
  • CVE-2026-58291

    Operation on a resource after expiration or release in Microsoft Edge (Chromium-based) allows an unauthorized attacker to disclose information over a network.

    CVSS 6.1 · Medium
    3 mentions
  • CVE-2026-56314

    Capgo before 12.128.12 fails to filter deleted app versions when joining channels during /updates resolution, allowing deleted bundles to remain selectable. Attackers can continue…

    CVSS 7.1 · High
    2 mentions
  • CVE-2026-2379

    On affected platforms with hardware IPSec support running Arista EOS with certain IPsec features enabled, EOS may exhibit unexpected behavior in specific cases. Physical interface…

    CVSS 8.2 · High
    1 mention
  • CVE-2026-33463

    Operation on a Resource after Expiration or Termination (CWE-672) in Kibana can lead to unauthorized information disclosure. A logic error in how expiration timestamps were valida…

    CVSS 5.3 · Medium
    1 mention