Jetty vulnerabilitiesAnd the versions its exploited flaws hit.
Jetty is made by Eclipse. We track 39 published vulnerabilities in it, across 358 versions. 1 of them is on the list of flaws known to be exploited, the newest added on 10 October 2023. If you run Jetty, check your version against the exploited flaws below and patch those first.
The most recent Jetty flaw added to the known-exploited list is CVE-2023-44487, on 10 October 2023. We keep watching the known-exploited list.
Which versions of Jetty do the exploited flaws hit?
Each exploited flaw lists the versions it affects, usually as ranges. "before 9.4.53" means every version up to, but not including, 9.4.53. Find your version, then patch.
- CVE-2023-44487Exploited list, 10 Oct 2023
HTTP/2 Rapid Reset Attack Vulnerability
before 9.4.5310.0.0 to before 10.0.1711.0.0 to before 11.0.1712.0.0 to before 12.0.2
Which Jetty vulnerabilities are being exploited?
1 flaw is on the government list of vulnerabilities known to be exploited. These are the ones criminals are using now, so they go first, whatever their severity score says.
- 7.5HTTP/2 Rapid Reset Attack Vulnerability
HTTP/2 contains a rapid reset vulnerability that allows for a distributed denial-of-service attack (DDoS).
Which Jetty flaws are most likely to be used?
Ranked by the latest exploit-likelihood forecast: the chance each flaw is used in an attack in the next 30 days. A high severity score on its own doesn't tell you that. Flaws shared by many other makers' products are left out.
- >99%
The HTTP/2 protocol allows a denial of service (server resource consumption) because request cancellation can reset many streams quickly, as exploited in the wild in August through October 2023.
- >99%CVE-2021-34429Medium
For Eclipse Jetty versions 9.4.37-9.4.42, 10.0.1-10.0.5 & 11.0.1-11.0.5, URIs can be crafted using some encoded characters to access the content of the WEB-INF directory and/or bypass some security constraints.
- 82%CVE-2021-28164Medium
In Eclipse Jetty 9.4.37.v20210219 to 9.4.38.v20210224, the default compliance mode allows requests with URIs that contain %2e or %2e%2e segments to access protected resources within the WEB-INF directory.
- 78%CVE-2021-28169Medium
For Eclipse Jetty versions <= 9.4.40, <= 10.0.2, <= 11.0.2, it is possible for requests to the ConcatServlet with a doubly encoded path to access protected resources within the WEB-INF directory.
- 78%CVE-2020-27223Medium
In Eclipse Jetty 9.4.6.v20170531 to 9.4.36.v20210114 (inclusive), 10.0.0, and 11.0.0 when Jetty handles a request containing multiple Accept headers with a large number of “quality” (i.e.
- 75%CVE-2015-2080High
The exception handling code in Eclipse Jetty before 9.2.9.v20150224 allows remote attackers to obtain sensitive information from process memory via illegal characters in an HTTP header, aka JetLeak.
- 54%CVE-2021-28165High
In Eclipse Jetty 7.2.2 to 9.4.38, 10.0.0.alpha0 to 10.0.1, and 11.0.0.alpha0 to 11.0.1, CPU usage can reach 100% upon receiving a large invalid TLS frame.
- 15%CVE-2017-7657Critical
In Eclipse Jetty, versions 9.2.x and older, 9.3.x (all configurations), and 9.4.x (non-default configuration with RFC2616 compliance enabled), transfer-encoding chunks are handled poorly.
- 11%CVE-2019-17638Critical
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.
Running Jetty? We'll keep checking.
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1 flaw being exploited affects software Acme tracks
HTTP/2 contains a rapid reset vulnerability that allows for a distributed denial-of-service attack (DDoS).
- Matched to
- Jetty on Acme's software list
- What to do
- Patch first, then check for signs of use
Sent to the alert recipients Acme chose. Also in the app and to Acme's webhook.
We track 39 published vulnerabilities listed under the name Jetty, across 358 versions. The most recent Jetty flaw added to the known-exploited list is CVE-2023-44487, on 10 October 2023.
1 is on the list of flaws known to be exploited. The most recently added is CVE-2023-44487.
Each flaw names its own versions, usually as ranges. The newest, CVE-2023-44487, affects before 9.4.53, 10.0.0 to before 10.0.17, 11.0.0 to before 11.0.17, 12.0.0 to before 12.0.2. The versions for every exploited flaw are listed on this page.
Create a Precursor Intelligence account and track Jetty. We match it against every published flaw, give each one a risk score from 0 to 100 and keep watching, so you hear about new ones as soon as we know, by email, in the app or by webhook.