CVE-2026-1757Disclosure

LOWCVSS 6.2 · MEDIUM

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Patch affected systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD description

A flaw was identified in the interactive shell of the xmllint utility, part of the libxml2 project, where memory allocated for user input is not properly released under certain conditions. When a user submits input consisting only of whitespace, the program skips command execution but fails to free the allocated buffer. Repeating this action causes memory to continuously accumulate. Over time, this can exhaust system memory and terminate the xmllint process, creating a denial-of-service condition on the local system.

0.5/ 10 priority

Sources & remediation

Weakness type (CWE)
CWE-401

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

STABLE

Threat summary

  • Patch or workaround signal is available
  • 5 mentions across 4 observed days
  • Momentum state: stable

What's happening

  • Patch or workaround mentioned in 1 signal
  • Technical details provided in 3 signals
  • Disclosure: 3 classified signals
  • General: 2 classified signals
  • Peaked 3d ago at 2 mentions (2026-02-02); latest day: 1
  • 5 total mentions across 4 days

Deep dive

Activity timeline5 mentions / 4d
01122Mentions · 2026-02-02: 2Mentions · 2026-02-11: 1Mentions · 2026-03-07: 1Mentions · 2026-03-20: 1Patch / Workaround · 2026-02-11: 1Technical Details · 2026-02-02: 2Technical Details · 2026-03-07: 102-0202-1103-0703-20
Signal classification2 categories
Disclosure
360.0%
General
240.0%
Referenced assets5 URLs
Classification over time
DateTotalLabels
2026-02-022
Disclosure2
2026-02-111
General1
2026-03-071
Disclosure1
2026-03-201
General1
Full discourse5 posts
  • CVE@CVEnew
    Disclosure

    CVE-2026-1757 A flaw was identified in the interactive shell of the xmllint utility, part of the libxml2 project, where memory allocated for user input is not properly released under… https://www.cve.org/CVERecord?id=CVE-2026-1757

    Post summary

    The post announces a memory‑allocation flaw in the xmllint utility’s interactive shell that leads to improper memory release.

    00020247
    56.5K followersView on X
  • \助けよや/𝕏𝕐†😱†𝕐𝕏@yoya
    General

    https://www.cve.org/CVERecord?id=CVE-2026-1757 これは xmllint 対話シェルなのでだいたいセーフ。(リモートから xmllint コマンド使わせるサービス、あんまりないよね。。) 実質的な最後の脆弱性は CVE-2025-32415 (2025年4月)で対処されてるので、今は良いけど、次脆弱性でたら各自パッチ作らなきゃって状況。

    Post summary

    The post mentions CVE‑2026‑1757 and notes that it appears safe due to a patch for a related CVE, but provides no PoC, exploit, or technical details, nor reports active exploitation.

    01000849
    2.3K followersView on X
  • Lambda Watchdog@LambdaWatchdog
    General

    🔍 Lambda Watchdog detected that CVE-2026-1757 is no longer present in latest AWS Lambda base image scans. https://github.com/aws/aws-lambda-base-images/issues/434 #AWS #Lambda #Security #CVE #DevOps #SecOps

    Post summary

    The post indicates CVE-2026-1757 is no longer present in the latest AWS Lambda base images, but offers no further details or evidence of exploitation.

    0000027
    31 followersView on X
  • Lambda Watchdog@LambdaWatchdog
    Disclosure

    🚨 New LOW CVE detected in AWS Lambda 🚨 CVE-2026-1757 impacts libxml2 in 27 Lambda base images. Details: https://github.com/aws/aws-lambda-base-images/issues/434 More: https://lambdawatchdog.com/ #AWS #Lambda #CVE #CloudSecurity #Serverless

    Post summary

    The post announces the discovery of a new low‑severity CVE affecting libxml2 in AWS Lambda base images, providing the CVE identifier and a link to an issue with further details.

    0000034
    31 followersView on X
  • Vulmon Vulnerability Feed@VulmonFeeds
    Disclosure

    CVE-2026-1757 Memory Leak Vulnerability in xmllint Utility Leads to Local Denial... https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-1757 Vulnerability Alert Subscriptions: https://alerts.vulmon.com/?utm_source=twitter&utm_medium=social&utm_campaign=2102281&utm_content=1

    Post summary

    A memory‑leak vulnerability in xmllint (CVE-2026-1757) has been disclosed, potentially causing local denial of service, but no PoC, exploit, patch, or evidence of active exploitation is presented.

    00000144
    4.0K followersView on X

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