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GHSA-86wm-rrjm-8wh8

MediumCVSS 4.8 / 10
Published Dec 2, 2020·Last modified Mar 13, 2026
Affected Components(0)

No affected components available

Description

Impact

If GZIP request body inflation is enabled and requests from different clients are multiplexed onto a single connection and if an attacker can send a request with a body that is received entirely by not consumed by the application, then a subsequent request on the same connection will see that body prepended to it's body.

The attacker will not see any data, but may inject data into the body of the subsequent request

CVE score is 4.8 AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L

Workarounds

The problem can be worked around by either:

  • Disabling compressed request body inflation by GzipHandler.
  • By always fully consuming the request content before sending a response.
  • By adding a Connection: close to any response where the servlet does not fully consume request content.
Risk Scores
Base Score
4.8

The vulnerability can be exploited over the network without needing physical access. It is difficult for an attacker to exploit this vulnerability and may require special conditions. An attacker does not need any special privileges or access rights. No user interaction is needed for the attacker to exploit this vulnerability. The impact is confined to the system where the vulnerability exists. There is a low impact on the integrity of the data. There is a low impact on the availability of the system.

Threat Intelligence
4.4

Exploitation attempts have been detected. Elevated vigilance and prompt remediation are advised.

EPSS
8.11%

The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.

Exploit
Not available

We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.

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