CVE-2026-33814VulnerabilityPublished 22 Jun 2026Updated 10 Nov 2026

SUSE · Security update for amazon-ecs-init

Affects SUSESource GCVE Database

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Mentioned vulnerabilities

CVE-2026-39821

Authoritative record:CVE-2026-33814· High 7.5

Not known to be exploited · CVSS 7.5 High · fixed in SUSE package updates : patch SUSE http2 soon.

Data as of 10 Nov 2026, 20:06 UTC

CVSS 3.1 base score

7.5High

How severe the flaw is on the 0–10 CVSS scale.

Patch: Available – fixed in 0.53.0, 1.26.3, 1.25.10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector: Network
Attack Complexity: Low
Privileges Required: None
User Interaction: None
Scope: Unchanged
Confidentiality: None
Integrity: None
Availability: High

Bold values are the worst case: easiest to exploit or largest impact.

Attack Vector: Network: The vulnerable component is bound to the network stack and the set of possible attackers extends beyond the other options listed, up to and including the entire Internet. Such a vulnerability is often termed 'remotely exploitable' and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers).
Attack Complexity: Low: Specialized access conditions or extenuating circumstances do not exist. An attacker can expect repeatable success against the vulnerable component.
Privileges Required: None: The attacker is unauthorized prior to attack, and therefore does not require any access to settings or files to carry out an attack.
User Interaction: None: The vulnerable system can be exploited without any interaction from any user.
Scope: Unchanged: An exploited vulnerability can only affect resources managed by the same security authority. In this case, the vulnerable component and the impacted component are either the same, or both are managed by the same security authority.
Confidentiality: None: There is no loss of confidentiality within the impacted component.
Integrity: None: There is no loss of integrity within the impacted component.
Availability: High: There is total loss of availability, resulting in the attacker being able to fully deny access to resources in the impacted component; this loss is either sustained (while the attacker continues to deliver the attack) or persistent (the condition persists even after the attack has completed). Alternatively, the attacker has the ability to deny some availability, but the loss of availability presents a direct, serious consequence to the impacted component (e.g., the attacker cannot disrupt existing connections, but can prevent new connections; the attacker can repeatedly exploit a vulnerability that, in each instance of a successful attack, leaks a only small amount of memory, but after repeated exploitation causes a service to become completely unavailable).

Definitions: FIRST CVSS v3.1 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 7 May 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 10 Nov 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Upgrade golang.org/x/net/http2 to 0.53.0; net/http to 1.26.3 or 1.25.10.

Affected software

Product	Affected	Fixed in
golang.org/x/netgolang.org/x/net/http2	Affected <0.53.0	Fixed in 0.53.0
Go standard librarynet/http	Affected >=1.26.0-0 <1.26.3	Fixed in 1.26.3
Go standard librarynet/http	Affected <1.25.10	Fixed in 1.25.10
Gogolang.org/x/net/http2`pkg:golang/golang.org/x/net/http2`Other threats	Affected =0	Fixed in–
Gogolang.org/x/net/http2`pkg:golang/golang.org/x/net/http2`Other threats	Affected <0.53.0	Fixed in 0.53.0
Gonet/http`pkg:golang/net/http`Other threats	Affected <1.25.10 >=1.26.0-0 <1.26.3	Fixed in 1.25.10 1.26.3

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

Description

This update for amazon-ecs-init fixes the following issues Update to version 1.103.2: - CVE-2026-33814: golang.org/x/net/http2: infinite loop in HTTP/2 transport when given bad SETTINGS_MAX_FRAME_SIZE (bsc#1265843). - CVE-2026-39821: golang.org/x/net/idna: failure to reject ASCII-only Punycode-encoded labels allows for validation bypass and privilege escalation (bsc#1266652). Changes: * Enhancement - Bump github.com/aws/aws-sdk-go-v2/service/fsx from 1.53.1 to 1.65.10 in /agent (#4966) * Enhancement - Add semgrep security scan for command injection (#4959) * Enhancement - Bump golang.org/x/tools from 0.39.0 to 0.45.0 in /ecs-agent (#4965), also updates x/net to 0.54.0 (bsc#1266652, CVE-2026-39821) * Enhancement - Add integration test for credential refresher (#4961) * Enhancement - Bump golang.org/x/tools from 0.42.0 to 0.45.0 in /agent (#4873) * Enhancement - Update Go version to 1.25.10 (#4960) * Enhancement - Bump go.etcd.io/bbolt from 1.3.9 to 1.4.3 in /ecs-agent (#4872) * Enhancement - update credentials-fetcher retry comments/tests (#4954) * Enhancement - Enhancement - Add retry mechanism to credentialsfetcher (#4948) * Enhancement - Add IMDS credential refresher (#4953) * Bugfix - fix flaky tests depending on timers (#4955) * Feature - Implement IMDS scanner for task credential retrieval, in the shared library (#4945) * Feature - Add config/capability for IMDS-based task credential retrieval (disabled for now) (#4938) * Feature - Add IMDS credential scanner interface and capability constant for IMDS-based task credential retrieval (#4937) * Enhancement - Bump github.com/aws/aws-sdk-go-v2/service/cloudwatchlogs from 1.47.3 to 1.65.0 in /agent (#4921) * Enhancement - Bump github.com/aws/aws-sdk-go-v2/service/s3 from 1.63.1 to 1.97.3 in /ecs-init (#4923) from 1.79.2 to 1.97.3 in /agent (#4924) * Enhancement - Bump go.opentelemetry.io/otel/exporters/otlp/ otlptrace/ otlptracehttp from 1.32.0 to 1.43.0 in /agent (#4926) * Enhancement - Truncate log values to make agent logs less verbose (#4940) * Enhancement - Golang bump: 1.25.9 (#4935) * Enhancement - Use env variable to read user input when mounting FSx volumes (#4934) * Enhancement - Enhancement - Replace SSM Dualstack endpoint resolution logic with UseDualStackEndpoint (#4931) * Enhancement - Emit duration metrics for TACS connect/disconnect (#4928) * Enhancement - Bump github.com/aws/aws-sdk-go-v2/aws/protocol/eventstream from 1.6.10 to 1.7.8 in /agent (#4922) from 1.6.5 to 1.7.8 in /ecs-init (#4925) * Enhancement - Track and emit metric for disconnect time from ACS (#4920) * Enhancement - engine: skip execution role checks when task desired status is stopped (#4918) * Enhancement - Add NeuronDevices type and sysfs-based device discovery (#4919) * Bugfix - Fix release workflow branch handling and add GitHub App token (#4929) * Bugfix - fix(netlib): Conditionally add IPv6 subnet to IPAM config when IPv6 (#4916) * Enhancement - Update SSM exec agent version to 3.3.4108.0 (#4912) * Enhancement - Update Go version to 1.25.8 (#4894) * Enhancement - Apply skip-gpg-check to both ecs-init and ssm agent (#4901) * Enhancement - Bump google.golang.org/grpc from 1.78.0 to 1.79.3 (#4906)

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